Align PET and CT images

Liu_Lance
Mon, 02 May 2022 07:26:04 +0000
Support

Hi
I feel very curious about how the two images PET (img_suv) and CT (imgCT) align together in the 3d slicer. they are from the same object. but the nifti affines are different as shown in the following figures. in the right four-up views. the two image are perfectly aligned. However, when I use nibabel package to load the two scans and try to rescale the CT to match the size (H and W) of the PET and overlay them into two channel for my data tensor. the ratio of the objects changes. the object from PET is much slimmer than that from CT. Could you help. I hope I have clearly state the problem, Thanks

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