Medical image dataset I am doing some project on medical image processing and I need some uncompressed medical images especially magnetic resonance angiography, vessel and so on. I have searched a lot but most of the available images are in JPEG format which is not a suitable format due to its lossy compression. Do you know any free dataset which have uncompressed medical images especially those mentioned?
The problem you are most likely having is that you need to search for files in the correct format.  DICOM is what you need to look for.
A few hits:


One example
A library from a DICOM viewer software producer
A library of images from Siemens


You will also need a DICOM viewer.
Image J  is free (non-commercial, no restrictions on use) and can be used under Windows, Mac, and Linux - it does require Java.
There are other viewers available, free as well as commercial.  Just search for DICOM viewers.