+ int length = tested->GetFile()->GetXSize()*tested->GetFile()->GetYSize()*tested->GetFile()->GetZSize()
+ *reference->GetScalarSize()*tested->GetFile()->GetNumberOfScalarComponents();
+
+ // *actual* image length may differ to 1 with Pixel Data Element length!
+ if (length != testedDataSize)
+ std::cout <<"--------------------length " << length << " != testedDataSize " << testedDataSize << std::endl;