Hey oritik,
Alexey is right, the images are definitely not suitable for typical photogrammetric processing pipelines based on SFM/MVS.
Creating 3D-models from CT-scans is actually fairly easy and there are a lot of different programs for this. I personally had some good experience using 3D Slicer, which is free and open source.
Do you have the original DICOM files? That's the standardized file format for CT scans, using these makes processing even more straight-forward.
Drop me a line in case you need more tips.
Cheers!