clitk::ExtractLymphStationsFilter<ImageType>::
ExtractStation_8_SetDefaultValues()
{
- SetDistanceMaxToAnteriorPartOfTheSpine(10);
MaskImagePointType p;
p[0] = 15; p[1] = 2; p[2] = 1;
SetEsophagusDiltationForAnt(p);
p[0] = 5; p[1] = 10; p[2] = 1;
SetEsophagusDiltationForRight(p);
- SetFuzzyThresholdForS8(0.5);
+ SetFuzzyThreshold("8", "Esophagus", 0.5);
+ SetInjectedThresholdForS8(150);
}
//--------------------------------------------------------------------
+//--------------------------------------------------------------------
+template <class TImageType>
+void
+clitk::ExtractLymphStationsFilter<TImageType>::
+ExtractStation_8()
+{
+ if (!CheckForStation("8")) return;
+
+ StartNewStep("Station 8");
+ StartSubStep();
+ ExtractStation_8_SI_Limits(); // OK, validated
+ ExtractStation_8_Ant_Limits(); // OK, validated
+ ExtractStation_8_Left_Sup_Limits(); // OK, validated
+ ExtractStation_8_Left_Inf_Limits(); // OK, validated
+ ExtractStation_8_Single_CCL_Limits(); // OK, validated
+ ExtractStation_8_Remove_Structures(); // OK, validated
+
+ // Store image filenames into AFDB
+ writeImage<MaskImageType>(m_ListOfStations["8"], "seg/Station8.mhd");
+ GetAFDB()->SetImageFilename("Station8", "seg/Station8.mhd");
+ WriteAFDB();
+ StopSubStep();
+}
+//--------------------------------------------------------------------
+
+
//--------------------------------------------------------------------
template <class ImageType>
void
left; the lower border of the bronchus intermedius on the right"
*/
- StartNewStep("[Station8] Inf/Sup mediastinum limits with carina/diaphragm junction");
-
- // Get Carina Z position
- MaskImagePointer Carina = GetAFDB()->template GetImage<MaskImageType>("Carina");
+ StartNewStep("[Station8] Sup/Inf limits with LeftLower/RightMiddle Lobe and diaphragm");
- // CHANGE TO -> OriginOfRightMiddleLobeBronchus ???
-
- std::vector<MaskImagePointType> centroids;
- clitk::ComputeCentroids<MaskImageType>(Carina, GetBackgroundValue(), centroids);
- m_CarinaZ = centroids[1][2];
- // add one slice to include carina ?
- m_CarinaZ += m_Mediastinum->GetSpacing()[2];
- // We dont need Carina structure from now
- Carina->Delete();
- GetAFDB()->SetDouble("CarinaZ", m_CarinaZ);
+ /* -----------------------------------------------
+ NEW SUPERIOR LIMIT = LeftLowerLobeBronchus /
+ RightMiddleLobeBronchus See FindLineForS7S8Separation
+ -----------------------------------------------
+ */
+ ImagePointType A;
+ ImagePointType B;
+ FindLineForS7S8Separation(A, B);
+
+ // add one slice to be adjacent to Station7
+ B[2] += m_Working_Support->GetSpacing()[2];
+ A[2] += m_Working_Support->GetSpacing()[2];
+
+ // Use the line to remove the inferior part
+ m_Working_Support =
+ SliceBySliceSetBackgroundFromSingleLine<MaskImageType>(m_Working_Support,
+ GetBackgroundValue(), A, B, 2, 0, true);
- // Get left lower lobe bronchus (L), take the upper border
- // Get right bronchus intermedius (RML), take the lower border
-
- /*
- double m_CarinaZ = GetAFDB()->GetPoint3D("Carina", 2) +
- m_Mediastinum->GetSpacing()[2]; // add one slice to include carina
- // double GOjunctionZ = GetAFDB()->GetPoint3D("GOjunction", 2);
- */
+ /* -----------------------------------------------
+ INFERIOR LIMIT = Diaphragm
+ -----------------------------------------------
+ */
// Found most inferior part of the lung
MaskImagePointer Lungs = GetAFDB()->template GetImage<MaskImageType>("Lungs");
// It should be already croped, so I took the origin and add 10mm above
m_DiaphragmInferiorLimit = Lungs->GetOrigin()[2]+10;
- // Lungs->Delete(); // we don't need it, release memory -> it we want to release, also free in AFDB
- clitk::PrintMemory(GetVerboseMemoryFlag(), "after reading lungs");
GetAFDB()->template ReleaseImage<MaskImageType>("Lungs");
- clitk::PrintMemory(GetVerboseMemoryFlag(), "after release lungs");
- /* Crop support :
- Superior limit = carina
- Inferior limit = DiaphragmInferiorLimit (old=Gastroesphogeal junction) */
m_Working_Support =
clitk::CropImageAlongOneAxis<MaskImageType>(m_Working_Support, 2,
- m_DiaphragmInferiorLimit, //GOjunctionZ,
- m_CarinaZ, true,
+ m_DiaphragmInferiorLimit,
+ B[2], true,
GetBackgroundValue());
-
- // Remove some structures that we know are excluded
- MaskImagePointer VertebralBody =
- GetAFDB()->template GetImage <MaskImageType>("VertebralBody");
- MaskImagePointer Aorta =
- GetAFDB()->template GetImage <MaskImageType>("Aorta");
-
- typedef clitk::BooleanOperatorLabelImageFilter<MaskImageType> BoolFilterType;
- typename BoolFilterType::Pointer boolFilter = BoolFilterType::New();
- boolFilter->InPlaceOn();
- boolFilter->SetInput1(m_Working_Support);
- boolFilter->SetInput2(VertebralBody);
- boolFilter->SetOperationType(BoolFilterType::AndNot);
- boolFilter->Update();
- boolFilter->SetInput1(boolFilter->GetOutput());
- boolFilter->SetInput2(Aorta);
- boolFilter->SetOperationType(BoolFilterType::AndNot);
- boolFilter->Update();
- m_Working_Support = boolFilter->GetOutput();
-
// Done.
StopCurrentStep<MaskImageType>(m_Working_Support);
m_ListOfStations["8"] = m_Working_Support;
template <class ImageType>
void
clitk::ExtractLymphStationsFilter<ImageType>::
-ExtractStation_8_Post_Limits()
+ExtractStation_8_Ant_Limits()
{
+ //--------------------------------------------------------------------
+ StartNewStep("[Station8] Ant part: not post to Esophagus");
/*
- Station 8: paraeosphageal nodes
-
- Anteriorly, it is in contact with Station 7 and the
- left main stem bronchus in its superior aspect (Fig. 3C–H) and
- with the heart more inferiorly. Posteriorly, Station 8 abuts the
- descending aorta and the anterior aspect of the vertebral body
- until an imaginary horizontal line running 1 cm posterior to the
- anterior border of the vertebral body (Fig. 3C).
-
- New classification IASCL 2009 :
-
- "Nodes lying adjacent to the wall of the esophagus and to the
- right or left of the midline, excluding subcarinal nodes (S7)
- Upper"
-
+ Consider Esophagus, dilate it and remove ant part. It remains part
+ on L & R, than can be partly removed by cutting what remains at
+ right of vertebral body.
*/
+
+ // Get Esophagus
+ m_Esophagus = GetAFDB()->template GetImage<MaskImageType>("Esophagus");
- StartNewStep("[Station8] Post limits with vertebral body");
- MaskImagePointer VertebralBody =
- GetAFDB()->template GetImage <MaskImageType>("VertebralBody");
+ // In images from the original article, Atlas – UM, the oesophagus
+ //was included in nodal stations 3p and 8. Having said that, in the
+ //description for station 8, it indicates that “the delineation of
+ //station 8 is limited to the soft tissues surrounding the
+ //oesophagus”. In the recent article, The IASLC Lung Cancer Staging
+ //Project (J Thorac Oncol 4:5, 568-77), the images drawn by
+ //Dr. Aletta Frasier exclude this structure. From an oncological
+ //prospective, the oesophagus should be excluded from these nodal
+ //stations.
- // Consider vertebral body slice by slice
- typedef clitk::ExtractSliceFilter<MaskImageType> ExtractSliceFilterType;
- typename ExtractSliceFilterType::Pointer extractSliceFilter = ExtractSliceFilterType::New();
- typedef typename ExtractSliceFilterType::SliceType SliceType;
- std::vector<typename SliceType::Pointer> vertebralSlices;
- extractSliceFilter->SetInput(VertebralBody);
- extractSliceFilter->SetDirection(2);
- extractSliceFilter->Update();
- extractSliceFilter->GetOutputSlices(vertebralSlices);
-
- // For each slice, compute the most anterior point
- std::map<int, typename SliceType::PointType> vertebralAntPositionBySlice;
- for(uint i=0; i<vertebralSlices.size(); i++) {
- typename SliceType::PointType p;
- bool found = clitk::FindExtremaPointInAGivenDirection<SliceType>(vertebralSlices[i],
- GetBackgroundValue(),
- 1, true, p);
- if (found) {
- vertebralAntPositionBySlice[i] = p;
- }
- else {
- // no Foreground in this slice (it appends generally at the
- // beginning and the end of the volume). Do nothing in this
- // case.
- }
- }
+ // Resize Esophagus like current support
+ m_Esophagus =
+ clitk::ResizeImageLike<MaskImageType>(m_Esophagus, m_Working_Support, GetBackgroundValue()); // Needed ?
- // Convert 2D points in slice into 3D points
- std::vector<MaskImagePointType> vertebralAntPositions;
- clitk::PointsUtils<MaskImageType>::Convert2DTo3DList(vertebralAntPositionBySlice,
- VertebralBody,
- vertebralAntPositions);
-
- // DEBUG : write list of points
- clitk::WriteListOfLandmarks<MaskImageType>(vertebralAntPositions,
- "vertebralMostAntPositions.txt");
-
- // Cut support posteriorly 1cm the most anterior point of the
- // VertebralBody. Do nothing below and above the VertebralBody. To
- // do that compute several region, slice by slice and fill.
- MaskImageRegionType region;
- MaskImageSizeType size;
- MaskImageIndexType start;
- size[2] = 1; // a single slice
- start[0] = m_Working_Support->GetLargestPossibleRegion().GetIndex()[0];
- size[0] = m_Working_Support->GetLargestPossibleRegion().GetSize()[0];
- for(uint i=0; i<vertebralAntPositions.size(); i++) {
- typedef typename itk::ImageRegionIterator<MaskImageType> IteratorType;
- IteratorType iter =
- IteratorType(m_Working_Support, m_Working_Support->GetLargestPossibleRegion());
- MaskImageIndexType index;
- // Consider some cm posterior to most anterior positions (usually
- // 1 cm).
- vertebralAntPositions[i][1] += GetDistanceMaxToAnteriorPartOfTheSpine();
- // Get index of this point
- m_Working_Support->TransformPhysicalPointToIndex(vertebralAntPositions[i], index);
- // Compute region (a single slice)
- start[2] = index[2];
- start[1] = m_Working_Support->GetLargestPossibleRegion().GetIndex()[1]+index[1];
- size[1] = m_Working_Support->GetLargestPossibleRegion().GetSize()[1]-start[1];
- region.SetSize(size);
- region.SetIndex(start);
- // Fill region
- if (m_Working_Support->GetLargestPossibleRegion().IsInside(start)) {
- itk::ImageRegionIterator<MaskImageType> it(m_Working_Support, region);
- it.GoToBegin();
- while (!it.IsAtEnd()) {
- it.Set(GetBackgroundValue());
- ++it;
- }
- }
- }
+ // Dilate to keep only not Anterior positions
+ MaskImagePointType radiusInMM = GetEsophagusDiltationForAnt();
+ m_Esophagus = clitk::Dilate<MaskImageType>(m_Esophagus,
+ radiusInMM,
+ GetBackgroundValue(),
+ GetForegroundValue(), true);
+ // Keep what is Posterior to Esophagus
+ typedef clitk::SliceBySliceRelativePositionFilter<MaskImageType> RelPosFilterType;
+ typename RelPosFilterType::Pointer relPosFilter = RelPosFilterType::New();
+ relPosFilter->VerboseStepFlagOff();
+ relPosFilter->WriteStepFlagOff();
+ relPosFilter->SetInput(m_Working_Support);
+ relPosFilter->SetInputObject(m_Esophagus);
+ relPosFilter->AddOrientationTypeString("PostTo");
+ // relPosFilter->InverseOrientationFlagOff();
+ relPosFilter->SetDirection(2); // Z axis
+ relPosFilter->UniqueConnectedComponentBySliceFlagOff();
+ relPosFilter->SetIntermediateSpacing(3);
+ relPosFilter->IntermediateSpacingFlagOn();
+ relPosFilter->SetFuzzyThreshold(GetFuzzyThreshold("8", "Esophagus"));
+ relPosFilter->RemoveObjectFlagOff(); // Do not exclude here because it is dilated
+ relPosFilter->CombineWithOrFlagOff(); // NO !
+ relPosFilter->IgnoreEmptySliceObjectFlagOn();
+ relPosFilter->Update();
+ m_Working_Support = relPosFilter->GetOutput();
+
+ // AutoCrop (OR SbS ?)
+ m_Working_Support = clitk::AutoCrop<MaskImageType>(m_Working_Support, GetBackgroundValue());
StopCurrentStep<MaskImageType>(m_Working_Support);
m_ListOfStations["8"] = m_Working_Support;
template <class ImageType>
void
clitk::ExtractLymphStationsFilter<ImageType>::
-ExtractStation_8_Ant_Limits()
+ExtractStation_8_Left_Sup_Limits()
{
//--------------------------------------------------------------------
- StartNewStep("[Station8] Ant limits with S7 above Carina");
- /*
- Anteriorly, it is in contact with Station 7 and the
- left main stem bronchus in its superior aspect (Fig. 3C–H) and
- with the heart more inferiorly.
-
- 1) line post wall bronchi (S7), till originRMLB
- - LUL bronchus : to detect in trachea. But not needed here ??
- 2) heart ! -> not delineated.
- ==> below S7, crop CT not to far away (ant), then try with threshold
-
- 1) ==> how to share with S7 ? Prepare both support at the same time !
- NEED vector of initial support for each station ? No -> map if it exist before, take it !!
+ StartNewStep("[Station8] Left limits: remove Left to line from Aorta to PulmonaryTrunk");
+ /*
+ We consider a line from Left part of Aorta to left part of
+ PulmonaryTrunk and remove what is at Left.
*/
-
- // Ant limit from carina (start) to end of S7 = originRMLB
- // Get Trachea
- MaskImagePointer Trachea = GetAFDB()->template GetImage<MaskImageType>("Trachea");
-
- MaskImagePointer m_Working_Trachea =
- clitk::CropImageAbove<MaskImageType>(Trachea, 2, m_CarinaZ, true, // AutoCrop
- GetBackgroundValue());
-
- // Seprate into two main bronchi
- MaskImagePointer LeftBronchus;
- MaskImagePointer RightBronchus;
-
- // Labelize and consider the two first (main) labels
- m_Working_Trachea = Labelize<MaskImageType>(m_Working_Trachea, 0, true, 1);
-
- // Carina position must at the first slice that separate the two
- // main bronchus (not superiorly). We thus first check that the
- // upper slice is composed of at least two labels
- typedef itk::ImageSliceIteratorWithIndex<MaskImageType> SliceIteratorType;
- SliceIteratorType iter(m_Working_Trachea, m_Working_Trachea->GetLargestPossibleRegion());
- iter.SetFirstDirection(0);
- iter.SetSecondDirection(1);
- iter.GoToReverseBegin(); // Start from the end (because image is IS not SI)
- int maxLabel=0;
- while (!iter.IsAtReverseEndOfSlice()) {
- while (!iter.IsAtReverseEndOfLine()) {
- if (iter.Get() > maxLabel) maxLabel = iter.Get();
- --iter;
+
+ // Load the structures
+ MaskImagePointer Aorta = GetAFDB()->template GetImage<MaskImageType>("Aorta");
+ MaskImagePointer PulmonaryTrunk = GetAFDB()->template GetImage<MaskImageType>("PulmonaryTrunk");
+
+ // Resize like the PT and define the slices
+ MaskImagePointType min, max;
+ clitk::GetMinMaxPointPosition<MaskImageType>(PulmonaryTrunk, min, max);
+ Aorta = clitk::CropImageAlongOneAxis<MaskImageType>(Aorta, 2, min[2], max[2], false, GetBackgroundValue());
+ std::vector<MaskSlicePointer> slices_aorta;
+ clitk::ExtractSlices<MaskImageType>(Aorta, 2, slices_aorta);
+ std::vector<MaskSlicePointer> slices_PT;
+ clitk::ExtractSlices<MaskImageType>(PulmonaryTrunk, 2, slices_PT);
+
+ // Find the points at left
+ std::vector<MaskImagePointType> p_A;
+ std::vector<MaskImagePointType> p_B;
+ MaskImagePointType pA;
+ MaskImagePointType pB;
+ for(uint i=0; i<slices_PT.size(); i++) {
+ typename MaskSliceType::PointType ps;
+ // In Aorta (assume a single CCL)
+ bool found =
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(slices_aorta[i], GetBackgroundValue(), 0, false, ps);
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(ps, Aorta, i, pA);
+
+ if (found) {
+ // In PT : generally 2 CCL, we keep the most at left
+ found =
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(slices_PT[i], GetBackgroundValue(), 0, false, ps);
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(ps, PulmonaryTrunk, i, pB);
+ }
+
+ if (found) {
+ p_A.push_back(pA);
+ p_B.push_back(pB);
}
- iter.PreviousLine();
- }
- if (maxLabel < 2) {
- clitkExceptionMacro("First slice form Carina does not seems to seperate the two main bronchus. Abort");
}
+ clitk::WriteListOfLandmarks<MaskImageType>(p_A, "S8-Aorta-Left-points.txt");
+ clitk::WriteListOfLandmarks<MaskImageType>(p_B, "S8-PT-Left-points.txt");
- // Compute 3D centroids of both parts to identify the left from the
- // right bronchus
- std::vector<ImagePointType> c;
- clitk::ComputeCentroids<MaskImageType>(m_Working_Trachea, GetBackgroundValue(), c);
- ImagePointType C1 = c[1];
- ImagePointType C2 = c[2];
-
- ImagePixelType leftLabel;
- ImagePixelType rightLabel;
- if (C1[0] < C2[0]) { leftLabel = 1; rightLabel = 2; }
- else { leftLabel = 2; rightLabel = 1; }
-
- // Select LeftLabel (set one label to Backgroundvalue)
- LeftBronchus =
- SetBackground<MaskImageType, MaskImageType>(m_Working_Trachea, m_Working_Trachea,
- rightLabel, GetBackgroundValue(), false);
- RightBronchus =
- SetBackground<MaskImageType, MaskImageType>(m_Working_Trachea, m_Working_Trachea,
- leftLabel, GetBackgroundValue(), false);
- // Crop images
- LeftBronchus = clitk::AutoCrop<MaskImageType>(LeftBronchus, GetBackgroundValue());
- RightBronchus = clitk::AutoCrop<MaskImageType>(RightBronchus, GetBackgroundValue());
-
- // Insert int AFDB if need after
- GetAFDB()->template SetImage <MaskImageType>("LeftBronchus", "seg/leftBronchus.mhd",
- LeftBronchus, true);
- GetAFDB()->template SetImage <MaskImageType>("RightBronchus", "seg/rightBronchus.mhd",
- RightBronchus, true);
-
- // Now crop below OriginOfRightMiddleLobeBronchusZ
- // It is not done before to keep entire bronchi.
-
- MaskImagePointer OriginOfRightMiddleLobeBronchus =
- GetAFDB()->template GetImage<MaskImageType>("OriginOfRightMiddleLobeBronchus");
- std::vector<MaskImagePointType> centroids;
- clitk::ComputeCentroids<MaskImageType>(OriginOfRightMiddleLobeBronchus, GetBackgroundValue(), centroids);
- m_OriginOfRightMiddleLobeBronchusZ = centroids[1][2];
- // add one slice to include carina ?
- m_OriginOfRightMiddleLobeBronchusZ += LeftBronchus->GetSpacing()[2];
- // We dont need Carina structure from now
- OriginOfRightMiddleLobeBronchus->Delete();
-
- LeftBronchus =
- clitk::CropImageBelow<MaskImageType>(LeftBronchus, 2,
- m_OriginOfRightMiddleLobeBronchusZ,
- true, // AutoCrop
- GetBackgroundValue());
- RightBronchus =
- clitk::CropImageBelow<MaskImageType>(RightBronchus, 2,
- m_OriginOfRightMiddleLobeBronchusZ,
- true, // AutoCrop
- GetBackgroundValue());
-
- // Search for points that are the most left/post/ant and most
- // right/post/ant of the left and right bronchus
- // 15 = not 15 mm more distance than the middle point.
- FindExtremaPointsInBronchus(LeftBronchus, 0, 10, m_RightMostInLeftBronchus,
- m_AntMostInLeftBronchus, m_PostMostInLeftBronchus);
- FindExtremaPointsInBronchus(RightBronchus, 1, 10, m_LeftMostInRightBronchus,
- m_AntMostInRightBronchus, m_PostMostInRightBronchus);
-
- // DEBUG : write the list of points
- ListOfPointsType v;
- v.reserve(m_RightMostInLeftBronchus.size()+m_AntMostInLeftBronchus.size()+
- m_PostMostInLeftBronchus.size());
- v.insert(v.end(), m_RightMostInLeftBronchus.begin(), m_RightMostInLeftBronchus.end() );
- v.insert(v.end(), m_AntMostInLeftBronchus.begin(), m_AntMostInLeftBronchus.end() );
- v.insert(v.end(), m_PostMostInLeftBronchus.begin(), m_PostMostInLeftBronchus.end() );
- clitk::WriteListOfLandmarks<MaskImageType>(v, "LeftBronchusPoints.txt");
-
- v.clear();
- v.reserve(m_LeftMostInRightBronchus.size()+m_AntMostInRightBronchus.size()+
- m_PostMostInRightBronchus.size());
- v.insert(v.end(), m_LeftMostInRightBronchus.begin(), m_LeftMostInRightBronchus.end() );
- v.insert(v.end(), m_AntMostInRightBronchus.begin(), m_AntMostInRightBronchus.end() );
- v.insert(v.end(), m_PostMostInRightBronchus.begin(), m_PostMostInRightBronchus.end() );
- clitk::WriteListOfLandmarks<MaskImageType>(v, "RightBronchusPoints.txt");
-
-
- // Now uses these points to limit, slice by slice
- // line is mainly horizontal, so mainDirection=1
- writeImage<MaskImageType>(m_Working_Support, "before.mhd");
+ // Remove part at Left
clitk::SliceBySliceSetBackgroundFromLineSeparation<MaskImageType>(m_Working_Support,
- m_PostMostInLeftBronchus,
- m_PostMostInRightBronchus,
- GetBackgroundValue(), 1, 10);
- writeImage<MaskImageType>(m_Working_Support, "after.mhd");
-
- // Keep main 3D CCL :
- m_Working_Support = Labelize<MaskImageType>(m_Working_Support, 0, false, 10);
- m_Working_Support = KeepLabels<MaskImageType>(m_Working_Support,
- GetBackgroundValue(),
- GetForegroundValue(), 1, 1, true);
-
- // Autocrop
- m_Working_Support = clitk::AutoCrop<MaskImageType>(m_Working_Support, GetBackgroundValue());
+ p_A, p_B,
+ GetBackgroundValue(),
+ 0, -10);
- // End of step
StopCurrentStep<MaskImageType>(m_Working_Support);
- // m_ListOfStations["8"] = m_Working_Support;
-
+ m_ListOfStations["8"] = m_Working_Support;
}
+//--------------------------------------------------------------------
+
//--------------------------------------------------------------------
template <class ImageType>
void
clitk::ExtractLymphStationsFilter<ImageType>::
-ExtractStation_8_LR_Limits()
+ExtractStation_8_Single_CCL_Limits()
{
-
//--------------------------------------------------------------------
- StartNewStep("[Station8] Ant part (not post to Esophagus)");
- /*
- Consider Esophagus, dilate it and remove ant part. It remains part
- on L & R, than can be partly removed by cutting what remains at
- right of vertebral body.
- */
-
- // Get Esophagus
- MaskImagePointer Esophagus = GetAFDB()->template GetImage<MaskImageType>("Esophagus");
- clitk::PrintMemory(GetVerboseMemoryFlag(), "after read Esophagus");
-
- // In images from the original article, Atlas – UM, the oesophagus
- //was included in nodal stations 3p and 8. Having said that, in the
- //description for station 8, it indicates that “the delineation of
- //station 8 is limited to the soft tissues surrounding the
- //oesophagus”. In the recent article, The IASLC Lung Cancer Staging
- //Project (J Thorac Oncol 4:5, 568-77), the images drawn by
- //Dr. Aletta Frasier exclude this structure. From an oncological
- //prospective, the oesophagus should be excluded from these nodal
- //stations.
- typedef clitk::BooleanOperatorLabelImageFilter<MaskImageType> BoolFilterType;
- typename BoolFilterType::Pointer boolFilter = BoolFilterType::New();
- boolFilter->InPlaceOn();
- boolFilter->SetInput1(m_Working_Support);
- boolFilter->SetInput2(Esophagus);
- boolFilter->SetOperationType(BoolFilterType::AndNot);
- boolFilter->Update();
- m_Working_Support = boolFilter->GetOutput();
-
- // Crop Esophagus : keep only below the OriginOfRightMiddleLobeBronchusZ
- Esophagus =
- clitk::CropImageAbove<MaskImageType>(Esophagus, 2,
- m_OriginOfRightMiddleLobeBronchusZ,
- true, // AutoCrop
- GetBackgroundValue());
-
- // Dilate to keep only not Anterior positions
- MaskImagePointType radiusInMM = GetEsophagusDiltationForAnt();
- Esophagus = EnlargeEsophagusDilatationRadiusInferiorly(Esophagus);
- Esophagus = clitk::Dilate<MaskImageType>(Esophagus,
- radiusInMM,
- GetBackgroundValue(),
- GetForegroundValue(), true);
- writeImage<MaskImageType>(Esophagus, "enlarged-eso.mhd");
-
- // Remove Anterior part according to this dilatated esophagus. Note:
- // because we crop Esophagus with ORML, the support will also be
- // croped in the same way. Here it is a desired feature. If we dont
- // want, use SetIgnoreEmptySliceObject(true)
-
- // In the new IASCL definition, it is not clear if sup limits is
- // around carina or On the right, it is “the lower border of the
- // bronchus intermedius”, indicated on the image set as a point
- // (“lower border of the bronchus intermedius”)
+ StartNewStep("[Station8 or 3P] Slice by slice, keep a single CCL (the closest to VertebralBody)");
- typedef clitk::SliceBySliceRelativePositionFilter<MaskImageType> RelPosFilterType;
- typename RelPosFilterType::Pointer relPosFilter = RelPosFilterType::New();
- relPosFilter->VerboseStepFlagOff();
- relPosFilter->SetInput(m_Working_Support);
- relPosFilter->SetInputObject(Esophagus);
- relPosFilter->AddOrientationTypeString("P");
- relPosFilter->InverseOrientationFlagOff();
- relPosFilter->SetDirection(2); // Z axis
- relPosFilter->UniqueConnectedComponentBySliceOff();
- relPosFilter->SetIntermediateSpacing(3);
- relPosFilter->ResampleBeforeRelativePositionFilterOn();
- relPosFilter->SetFuzzyThreshold(GetFuzzyThresholdForS8());
- relPosFilter->RemoveObjectFlagOff(); // Do not exclude here because it is dilated
- relPosFilter->Update();
- m_Working_Support = relPosFilter->GetOutput();
+ // Consider slices
+ std::vector<typename MaskSliceType::Pointer> slices;
+ std::vector<typename MaskSliceType::Pointer> slices_vb;
+ clitk::ExtractSlices<MaskImageType>(m_Working_Support, 2, slices);
+ MaskImagePointer VertebralBody =
+ GetAFDB()->template GetImage <MaskImageType>("VertebralBody");
+ VertebralBody = clitk::ResizeImageLike<MaskImageType>(VertebralBody, m_Working_Support, GetBackgroundValue());
+ clitk::ExtractSlices<MaskImageType>(VertebralBody, 2, slices_vb);
+
+ for(uint i=0; i<slices.size(); i++) {
+ // Decompose in labels
+ slices[i] = Labelize<MaskSliceType>(slices[i], 0, true, 100);
+ // Compute centroids coordinate
+ std::vector<typename MaskSliceType::PointType> centroids;
+ std::vector<typename MaskSliceType::PointType> c;
+ clitk::ComputeCentroids<MaskSliceType>(slices[i], GetBackgroundValue(), centroids);
+ clitk::ComputeCentroids<MaskSliceType>(slices_vb[i], GetBackgroundValue(), c);
+ if ((c.size() > 1) && (centroids.size() > 1)) {
+ // keep the one which is the closer to vertebralbody centroid
+ double distance=1000000;
+ int index=0;
+ for(uint j=1; j<centroids.size(); j++) {
+ double d = centroids[j].EuclideanDistanceTo(c[1]);
+ if (d<distance) {
+ distance = d;
+ index = j;
+ }
+ }
+ // remove all others label
+ slices[i] = KeepLabels<MaskSliceType>(slices[i], GetBackgroundValue(),
+ GetForegroundValue(), index, index, true);
+ }
+ }
+ m_Working_Support = clitk::JoinSlices<MaskImageType>(slices, m_Working_Support, 2);
+
+ StopCurrentStep<MaskImageType>(m_Working_Support);
+ m_ListOfStations["8"] = m_Working_Support;
+}
+//--------------------------------------------------------------------
- // AutoCrop (OR SbS ?)
- m_Working_Support = clitk::AutoCrop<MaskImageType>(m_Working_Support, GetBackgroundValue());
- StopCurrentStep<MaskImageType>(m_Working_Support);
+//--------------------------------------------------------------------
+template <class ImageType>
+void
+clitk::ExtractLymphStationsFilter<ImageType>::
+ExtractStation_8_Left_Inf_Limits()
+{
//--------------------------------------------------------------------
- StartNewStep("[Station8] Left and Right limits arround esophagus (below Carina)");
+ StartNewStep("[Station8] Left limits around esophagus with lines from VertebralBody-Aorta-Esophagus");
// Estract slices for current support for slice by slice processing
std::vector<typename MaskSliceType::Pointer> slices;
clitk::ExtractSlices<MaskImageType>(m_Working_Support, 2, slices);
-
+
+ // Remove what is outside the mediastinum in this enlarged Esophagus -> it allows to select
+ // 'better' extrema points (not too post).
+ MaskImagePointer Lungs = GetAFDB()->template GetImage<MaskImageType>("Lungs");
+ clitk::AndNot<MaskImageType>(m_Esophagus, Lungs, GetBackgroundValue());
+ GetAFDB()->template ReleaseImage<MaskImageType>("Lungs");
+
// Estract slices of Esophagus (resize like support before to have the same set of slices)
- MaskImagePointer EsophagusForSlice = clitk::ResizeImageLike<MaskImageType>(Esophagus, m_Working_Support, GetBackgroundValue());
+ MaskImagePointer EsophagusForSlice =
+ clitk::ResizeImageLike<MaskImageType>(m_Esophagus, m_Working_Support, GetBackgroundValue());
std::vector<typename MaskSliceType::Pointer> eso_slices;
clitk::ExtractSlices<MaskImageType>(EsophagusForSlice, 2, eso_slices);
// Estract slices of Vertebral (resize like support before to have the same set of slices)
MaskImagePointer VertebralBody = GetAFDB()->template GetImage<MaskImageType>("VertebralBody");
VertebralBody = clitk::ResizeImageLike<MaskImageType>(VertebralBody, m_Working_Support, GetBackgroundValue());
+ // Remove what is outside the support to not consider what is to
+ // posterior in the VertebralBody (post the horizontal line)
+ clitk::And<MaskImageType>(VertebralBody, m_Working_Support, GetBackgroundValue());
+ // writeImage<MaskImageType>(VertebralBody, "vb.mhd");
std::vector<typename MaskSliceType::Pointer> vert_slices;
clitk::ExtractSlices<MaskImageType>(VertebralBody, 2, vert_slices);
clitk::ExtractSlices<MaskImageType>(m_Mediastinum, 2, mediast_slices);
// List of points
- std::vector<MaskImagePointType> p_RightMostAnt;
- std::vector<MaskImagePointType> p_RightMostPost;
- std::vector<MaskImagePointType> p_LeftMostAnt;
- std::vector<MaskImagePointType> p_LeftMostPost;
- std::vector<MaskImagePointType> p_AllPoints;
+ std::vector<MaskImagePointType> p_MostLeftVertebralBody;
+ std::vector<MaskImagePointType> p_MostRightVertebralBody;
+ std::vector<MaskImagePointType> p_MostLeftAorta;
+ std::vector<MaskImagePointType> p_MostLeftEsophagus;
/*
In the following, we search for the LeftRight limits. We search
is concave between Eso/VertebralBody. Esophagus is a bit
dilatated. On VertebralBody we go right (or left) until we reach
the lung (but no more 20 mm).
- */
+ */
- // Loop slices
+ // Temporary 3D point
MaskImagePointType p;
- MaskImagePointType pp;
+
+ typename MaskSliceType::PointType minSlicePoint;
+ typename MaskSliceType::PointType maxSlicePoint;
+ clitk::GetMinMaxPointPosition<MaskSliceType>(vert_slices[0], minSlicePoint, maxSlicePoint);
+
+ // Loop slices
for(uint i=0; i<slices.size() ; i++) {
- // Declare all needed points (sp = slice point)
- typename MaskSliceType::PointType sp_maxRight_Eso;
- typename MaskSliceType::PointType sp_maxRight_Aorta;
- typename MaskSliceType::PointType sp_maxRight_Vertebra;
- typename MaskSliceType::PointType sp_maxLeft_Eso;
- typename MaskSliceType::PointType sp_maxLeft_Aorta;
- typename MaskSliceType::PointType sp_maxLeft_Vertebra;
-
- // Right is at left on screen, coordinate decrease
- // Left is at right on screen, coordinate increase
-
- // Find limit of Vertebral -> only at most Post part of current
- // slice support. First found most ant point in VertebralBody
- typedef MaskSliceType SliceType;
- typename SliceType::PointType p_slice_ant;
- bool found = clitk::FindExtremaPointInAGivenDirection<SliceType>(vert_slices[i], GetBackgroundValue(), 1, true, p_slice_ant);
- if (!found) {
- // It should not happen ! But sometimes, a contour is missing or
- // the VertebralBody is not delineated enough inferiorly ... in
- // those cases, we consider the first found slice.
- std::cerr << "No foreground pixels in this VertebralBody slices !?? I try with the previous/next slice" << std::endl;
- int j=i++;
- bool found = false;
- while (!found) {
- found = clitk::FindExtremaPointInAGivenDirection<SliceType>(vert_slices[j], GetBackgroundValue(), 1, true, p_slice_ant);
- //clitkExceptionMacro("No foreground pixels in this VertebralBody slices ??");
- j++;
- }
- }
- p_slice_ant[1] += GetDistanceMaxToAnteriorPartOfTheSpine(); // Consider offset
-
- // The, find most Right and Left points on that AP position
- typename SliceType::IndexType indexR;
- typename SliceType::IndexType indexL;
- vert_slices[i]->TransformPhysicalPointToIndex(p_slice_ant, indexR);
- indexL = indexR;
- // Check that is inside the mask
- indexR[1] = std::min(indexR[1], (long)vert_slices[i]->GetLargestPossibleRegion().GetSize()[1]-1);
- indexL[1] = indexR[1];
- while (vert_slices[i]->GetPixel(indexR) != GetBackgroundValue()) {
- indexR[0] --; // Go to the right
- }
- while (vert_slices[i]->GetPixel(indexL) != GetBackgroundValue()) {
- indexL[0] ++; // Go to the left
- }
- vert_slices[i]->TransformIndexToPhysicalPoint(indexR, sp_maxRight_Vertebra);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxRight_Vertebra, VertebralBody, i, p);
- p_AllPoints.push_back(p);
- vert_slices[i]->TransformIndexToPhysicalPoint(indexL, sp_maxLeft_Vertebra);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxLeft_Vertebra, VertebralBody, i, p);
- p_AllPoints.push_back(p);
+ // Declare all needed 2D points (sp = slice point)
+ // typename MaskSliceType::PointType sp_MostRightVertebralBody;
+ typename MaskSliceType::PointType sp_MostLeftVertebralBody;
+ typename MaskSliceType::PointType sp_MostLeftAorta;
+ typename MaskSliceType::PointType sp_temp;
+ typename MaskSliceType::PointType sp_MostLeftEsophagus;
+
+ /* -------------------------------------------------------------------------------------
+ Find first point not in mediastinum at LEFT
+ */
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(vert_slices[i], GetBackgroundValue(),
+ 0, false, sp_MostLeftVertebralBody);
+ // clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftVertebralBody, VertebralBody, i, p);
+ // DD(p);
+
+ sp_MostLeftVertebralBody =
+ clitk::FindExtremaPointInAGivenLine<MaskSliceType>(mediast_slices[i], 0, false,
+ sp_MostLeftVertebralBody, GetBackgroundValue(), 30);
+ // clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftVertebralBody, VertebralBody, i, p);
+ // DD(p);
+
+ sp_MostLeftVertebralBody[0] += 2; // 2mm margin
+ // clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftVertebralBody, VertebralBody, i, p);
+ // DD(p);
+
+ // Convert 2D points into 3D
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftVertebralBody, VertebralBody, i, p);
+ p_MostLeftVertebralBody.push_back(p);
+
+ /* -------------------------------------------------------------------------------------
+ Find first point not in mediastinum at RIGHT. Not used yet.
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(vert_slices[i], GetBackgroundValue(),
+ 0, true, sp_MostRightVertebralBody);
+ sp_MostRightVertebralBody =
+ clitk::FindExtremaPointInAGivenLine<MaskSliceType>(mediast_slices[i], 0, true,
+ sp_MostRightVertebralBody, GetBackgroundValue(),30);
+ sp_MostRightVertebralBody[0] -= 2; // 2 mm margin
- // Find last point out of the mediastinum on this line, Right :
- mediast_slices[i]->TransformPhysicalPointToIndex(sp_maxRight_Vertebra, indexR);
- double distance = 0.0;
- while (mediast_slices[i]->GetPixel(indexR) != GetBackgroundValue()) {
- indexR[0] --;
- distance += mediast_slices[i]->GetSpacing()[0];
- }
- if (distance < 30) { // Ok in this case, we found limit with lung
- mediast_slices[i]->TransformIndexToPhysicalPoint(indexR, sp_maxRight_Vertebra);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxRight_Vertebra, m_Mediastinum, i, p);
- }
- else { // in that case, we are probably below the diaphragm, so we
- // add aribtrarly few mm
- sp_maxRight_Vertebra[0] -= 2; // Leave 2 mm around the VertebralBody
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxRight_Vertebra, m_Mediastinum, i, p);
- }
- p_RightMostPost.push_back(p);
- p_AllPoints.push_back(p);
-
- // Find last point out of the mediastinum on this line, Left :
- mediast_slices[i]->TransformPhysicalPointToIndex(sp_maxLeft_Vertebra, indexL);
- distance = 0.0;
- while (mediast_slices[i]->GetPixel(indexL) != GetBackgroundValue()) {
- indexL[0] ++;
- distance += mediast_slices[i]->GetSpacing()[0];
- }
- if (distance < 30) { // Ok in this case, we found limit with lung
- mediast_slices[i]->TransformIndexToPhysicalPoint(indexL, sp_maxLeft_Vertebra);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxLeft_Vertebra, m_Mediastinum, i, p);
- }
- else { // in that case, we are probably below the diaphragm, so we
- // add aribtrarly few mm
- sp_maxLeft_Vertebra[0] += 2; // Leave 2 mm around the VertebralBody
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxLeft_Vertebra, m_Mediastinum, i, p);
- }
- p_LeftMostPost.push_back(p);
- p_AllPoints.push_back(p);
-
- // Find right limit of Esophagus and Aorta
- clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(eso_slices[i], GetBackgroundValue(), 0, true, sp_maxRight_Eso);
- bool f = clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(aorta_slices[i], GetBackgroundValue(), 0, true, sp_maxRight_Aorta);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxRight_Eso, EsophagusForSlice, i, p);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxRight_Aorta, Aorta, i, pp);
- pp[0] -= 2; // Add a margin of 2 mm to include the Aorta 'wall'
- p_AllPoints.push_back(p);
- if (f) {
- p_AllPoints.push_back(pp);
- MaskImagePointType A = p_RightMostPost.back();
- MaskImagePointType B = p;
- MaskImagePointType C = pp;
- double s = (B[0] - A[0]) * (C[1] - A[1]) - (B[1] - A[1]) * (C[0] - A[0]);
- if (s>0) p_RightMostAnt.push_back(p);
- else p_RightMostAnt.push_back(pp);
- }
- else {
- p_RightMostAnt.push_back(p);
- }
+ // Convert 2D points into 3D
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostRightVertebralBody, VertebralBody, i, p);
+ p_MostRightVertebralBody.push_back(p);
+ */
- // --------------------------------------------------------------------------
- // Find the limit on the Left: most left point between Eso and
- // Vertebra. (Left is left on screen, coordinate increase)
-
- // Find left limit of Esophagus
- clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(eso_slices[i], GetBackgroundValue(), 0, false, sp_maxLeft_Eso);
- f = clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(aorta_slices[i], GetBackgroundValue(), 0, false, sp_maxLeft_Aorta);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxLeft_Eso, EsophagusForSlice, i, p);
- clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_maxLeft_Aorta, Aorta, i, pp);
- p_AllPoints.push_back(p);
- pp[0] += 2; // Add a margin of 2 mm to include the 'wall'
- if (f) { // not below Aorta
- p_AllPoints.push_back(pp);
- MaskImagePointType A = p_LeftMostPost.back();
- MaskImagePointType B = p;
- MaskImagePointType C = pp;
- double s = (B[0] - A[0]) * (C[1] - A[1]) - (B[1] - A[1]) * (C[0] - A[0]);
- if (s<0) p_LeftMostAnt.push_back(p); // Insert point most at Left
- else p_LeftMostAnt.push_back(pp);
+
+ /* -------------------------------------------------------------------------------------
+ Find most Left point in Esophagus
+ */
+ bool found = clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(eso_slices[i], GetBackgroundValue(), 0, false, sp_MostLeftEsophagus);
+ if (!found) { // No more Esophagus, I remove the previous point
+ //DD("no eso pop back");
+ p_MostLeftVertebralBody.pop_back();
}
else {
- p_LeftMostAnt.push_back(p);
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftEsophagus, EsophagusForSlice, i, p);
+ p_MostLeftEsophagus.push_back(p);
+ }
+
+ /* -------------------------------------------------------------------------------------
+ Find most Left point in Aorta
+ */
+ if (found) {
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(aorta_slices[i], GetBackgroundValue(), 0, false, sp_MostLeftAorta);
+ sp_MostLeftAorta = clitk::FindExtremaPointInAGivenLine<MaskSliceType>(mediast_slices[i], 0, false, sp_MostLeftAorta, GetBackgroundValue(), 10);
+ typename MaskSliceType::PointType temp=sp_MostLeftEsophagus;
+ temp[0] -= 10;
+ if (clitk::IsOnTheSameLineSide(sp_MostLeftAorta, sp_MostLeftVertebralBody, sp_MostLeftEsophagus, temp)) {
+ // sp_MostLeftAorta is on the same side than temp (at Right) -> ignore Aorta
+ sp_MostLeftAorta = sp_MostLeftEsophagus;
+ }
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(sp_MostLeftAorta, Aorta, i, p);
+ p_MostLeftAorta.push_back(p);
}
+
} // End of slice loop
- clitk::WriteListOfLandmarks<MaskImageType>(p_AllPoints, "LR-Eso-Vert.txt");
+ clitk::WriteListOfLandmarks<MaskImageType>(p_MostLeftVertebralBody, "S8-MostLeft-VB-points.txt");
+ // clitk::WriteListOfLandmarks<MaskImageType>(p_MostRightVertebralBody, "S8-MostRight-VB-points.txt");
+ clitk::WriteListOfLandmarks<MaskImageType>(p_MostLeftAorta, "S8-MostLeft-Aorta-points.txt");
+ clitk::WriteListOfLandmarks<MaskImageType>(p_MostLeftEsophagus, "S8-MostLeft-eso-points.txt");
- // Now uses these points to limit, slice by slice
- // Line is mainly vertical, so mainDirection=0
clitk::SliceBySliceSetBackgroundFromLineSeparation<MaskImageType>(m_Working_Support,
- p_RightMostAnt, p_RightMostPost,
- GetBackgroundValue(), 0, 10);
+ p_MostLeftVertebralBody, p_MostLeftAorta,
+ GetBackgroundValue(), 0, -10);
+
clitk::SliceBySliceSetBackgroundFromLineSeparation<MaskImageType>(m_Working_Support,
- p_LeftMostAnt, p_LeftMostPost,
+ p_MostLeftAorta, p_MostLeftEsophagus,
GetBackgroundValue(), 0, -10);
// END
StopCurrentStep<MaskImageType>(m_Working_Support);
//--------------------------------------------------------------------
template <class ImageType>
-typename clitk::ExtractLymphStationsFilter<ImageType>::MaskImagePointer
+void
clitk::ExtractLymphStationsFilter<ImageType>::
-EnlargeEsophagusDilatationRadiusInferiorly(MaskImagePointer & Esophagus)
+ExtractStation_8_Remove_Structures()
{
- // Check if Esophagus is delineated at least until GOjunction. Now,
- // because we use AutoCrop, Origin[2] gives this max inferior
- // position.
- // double GOjunctionZ = GetAFDB()->GetPoint3D("GOjunction", 2);
-
- if (Esophagus->GetOrigin()[2] > m_DiaphragmInferiorLimit) {
- std::cout << "Warning Esophagus is not delineated until Diaphragm. I mirror-pad it."
- << std::endl;
- double extraSize = Esophagus->GetOrigin()[2]-m_DiaphragmInferiorLimit;
-
- // Pad with few more slices
- typedef itk::MirrorPadImageFilter<MaskImageType, MaskImageType> PadFilterType;
- typename PadFilterType::Pointer padFilter = PadFilterType::New();
- padFilter->SetInput(Esophagus);
- MaskImageSizeType b;
- b[0] = 0; b[1] = 0; b[2] = (uint)ceil(extraSize/Esophagus->GetSpacing()[2])+1;
- padFilter->SetPadLowerBound(b);
- padFilter->Update();
- Esophagus = padFilter->GetOutput();
- }
- return Esophagus;
+ //--------------------------------------------------------------------
+ Remove_Structures("8", "Aorta");
+ Remove_Structures("8", "Esophagus");
+ Remove_Structures("8", "VertebralBody");
+
+ // END
+ StopCurrentStep<MaskImageType>(m_Working_Support);
+ m_ListOfStations["8"] = m_Working_Support;
+ return;
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
-template <class ImageType>
+template <class TImageType>
void
-clitk::ExtractLymphStationsFilter<ImageType>::
-ExtractStation_8_LR_Limits_old()
+clitk::ExtractLymphStationsFilter<TImageType>::
+FindExtremaPointsInBronchus(MaskImagePointer input,
+ int direction,
+ double distance_max_from_center_point,
+ ListOfPointsType & LR,
+ ListOfPointsType & Ant,
+ ListOfPointsType & Post)
{
- /*
- Station 8: paraeosphageal nodes
- Laterally, it is within the pleural envelope and again abuts the
- descending aorta on the left. Reasonably, the delineation of
- Station 8 is limited to the soft tissue surrounding the esophagus
- (Fig. 3C–H).
- */
+ // Other solution ==> with auto bounding box ! (but pb to prevent to
+ // be too distant from the center point
- StartNewStep("[Station8] Right limits (around esophagus)");
- // Get Esophagus
- MaskImagePointer Esophagus = GetAFDB()->template GetImage<MaskImageType>("Esophagus");
-
- // Autocrop to get first slice with starting Esophagus
- Esophagus = clitk::AutoCrop<MaskImageType>(Esophagus, GetBackgroundValue());
-
- // Dilate
- // LR dilatation -> large to keep point inside
- // AP dilatation -> few mm
- // SI dilatation -> enough to cover Diaphragm (old=GOjunctionZ)
- MaskImagePointType radiusInMM = GetEsophagusDiltationForRight();
- Esophagus = EnlargeEsophagusDilatationRadiusInferiorly(Esophagus);
- Esophagus = clitk::Dilate<MaskImageType>(Esophagus,
- radiusInMM,
- GetBackgroundValue(),
- GetForegroundValue(), true);
- writeImage<MaskImageType>(Esophagus, "dilateEso2.mhd");
-
- writeImage<MaskImageType>(m_Working_Support, "before-relpos2.mhd");
-
- // Remove Right (Left on the screen) part according to this
- // dilatated esophagus
- typedef clitk::SliceBySliceRelativePositionFilter<MaskImageType> RelPosFilterType;
- typename RelPosFilterType::Pointer relPosFilter = RelPosFilterType::New();
- relPosFilter->VerboseStepFlagOff();
- relPosFilter->WriteStepFlagOff();
- relPosFilter->SetInput(m_Working_Support);
- relPosFilter->SetInputObject(Esophagus);
- relPosFilter->AddOrientationTypeString("L");
- relPosFilter->InverseOrientationFlagOn(); // Not Left to
- relPosFilter->SetDirection(2); // Z axis
- relPosFilter->UniqueConnectedComponentBySliceOff(); // important
- relPosFilter->SetIntermediateSpacing(4);
- relPosFilter->ResampleBeforeRelativePositionFilterOn();
- relPosFilter->SetFuzzyThreshold(0.9); // remove few part only
- relPosFilter->RemoveObjectFlagOff();
- relPosFilter->Update();
- m_Working_Support = relPosFilter->GetOutput();
-
- // Get a single 3D CCL
- m_Working_Support = Labelize<MaskImageType>(m_Working_Support, 0, false, 10);
- m_Working_Support = KeepLabels<MaskImageType>(m_Working_Support,
- GetBackgroundValue(),
- GetForegroundValue(), 1, 1, true);
-
-
- /*
- // Re-Add post to Esophagus -> sometimes previous relpos remove some
- // correct part below esophagus.
- MaskImagePointer Esophagus = GetAFDB()->template GetImage<MaskImageType>("Esophagus");
- EnlargeEsophagusDilatationRadiusInferiorly(Esophagus);
- writeImage<MaskImageType>(Esophagus, "e-again.mhd");
- typedef clitk::SliceBySliceRelativePositionFilter<MaskImageType> RelPosFilterType;
- typename RelPosFilterType::Pointer relPosFilter = RelPosFilterType::New();
- relPosFilter->VerboseStepOff();
- relPosFilter->WriteStepOff();
- relPosFilter->SetInput(m_Working_Support);
- relPosFilter->SetInputObject(Esophagus);
- relPosFilter->SetOrientationTypeString("P");
- relPosFilter->InverseOrientationFlagOff();
- relPosFilter->SetDirection(2); // Z axis
- relPosFilter->UniqueConnectedComponentBySliceOff(); // important
- relPosFilter->SetIntermediateSpacing(4);
- relPosFilter->ResampleBeforeRelativePositionFilterOn();
- relPosFilter->CombineWithOrFlagOn();
- relPosFilter->SetFuzzyThreshold(0.9); // remove few part only
- relPosFilter->RemoveObjectFlagOff();
- relPosFilter->Update();
- m_Working_Support = relPosFilter->GetOutput();
- */
+ // Extract slices
+ std::vector<typename MaskSliceType::Pointer> slices;
+ clitk::ExtractSlices<MaskImageType>(input, 2, slices);
+
+ // Loop on slices
+ bool found;
+ for(uint i=0; i<slices.size(); i++) {
+ /*
+ // Keep main CCL
+ slices[i] = Labelize<MaskSliceType>(slices[i], 0, true, 10);
+ slices[i] = KeepLabels<MaskSliceType>(slices[i],
+ GetBackgroundValue(),
+ GetForegroundValue(), 1, 1, true);
+ */
- StopCurrentStep<MaskImageType>(m_Working_Support);
- m_ListOfStations["8"] = m_Working_Support;
-}
+ // ------- Find rightmost or leftmost point -------
+ MaskSliceType::PointType LRMost;
+ found =
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(slices[i],
+ GetBackgroundValue(),
+ 0, // axis XY
+ (direction==0?false:true), // right or left according to direction
+ LRMost);
+ // ------- Find postmost point -------
+ MaskSliceType::PointType postMost;
+ found =
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(slices[i],
+ GetBackgroundValue(),
+ 1, false, LRMost,
+ distance_max_from_center_point,
+ postMost);
+ // ------- Find antmost point -------
+ MaskSliceType::PointType antMost;
+ found =
+ clitk::FindExtremaPointInAGivenDirection<MaskSliceType>(slices[i],
+ GetBackgroundValue(),
+ 1, true, LRMost,
+ distance_max_from_center_point,
+ antMost);
+ // Only add point if found
+ if (found) {
+ // ------- Convert 2D to 3D points --------
+ MaskImageType::PointType p;
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(LRMost, input, i, p);
+ LR.push_back(p);
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(antMost, input, i, p);
+ Ant.push_back(p);
+ clitk::PointsUtils<MaskImageType>::Convert2DTo3D(postMost, input, i, p);
+ Post.push_back(p);
+ }
+ }
+}
//--------------------------------------------------------------------
git://git.creatis.insa-lyon.fr / clitk.git / blobdiff