Hi VMTK users,

I have two volumetric image sets taken at the same time point with slightly 
different patient locations (according to the dicom header files). One is a 
bone scan and the other is a contrast-enhanced vessel scan. When loading these 
two data sets using vmtkimageviewer, vmtk assumes that they share the same 
patient position and therefore share the same origin. Consequently when the 
vessel and bone scans are segmented, they are clearly misaligned.  Does vmtk 
assume the same patient position when overlaying any two image sets (the sets 
share the same number of pixel rows and columns and number of images 
(512x512x512); additionally, they have the same pixel spacing)? Is there a way 
to explicitly give vmtkimagereader the patient position of each image set, so 
that the corresponding segmentations will be aligned?

Thank you for your help,
Anna
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