+/// \brief Only user knows what kind of image he is going to write !
+///
+/// -1) user created ex nihilo his own image and wants to write it as a Dicom image.
+/// USER_OWN_IMAGE
+/// -2) user modified the pixels of an existing image.
+/// FILTERED_IMAGE
+/// -3) user created a new image, using existing images (eg MIP, MPR, cartography image)
+/// CREATED_IMAGE
+/// -4) user modified/added some tags *without processing* the pixels (anonymization...
+/// UNMODIFIED_PIXELS_IMAGE
+enum ImageContentType
+{
+// note to developer : don't forget to add as well in vtkGdcmWriter.h !
+ USER_OWN_IMAGE = 1,
+ FILTERED_IMAGE,
+ CREATED_IMAGE,
+ UNMODIFIED_PIXELS_IMAGE
+};
+