For thoracic outlet syndrome. what sites on the body should i ask my pa to request to do a x-ray , mri, ct? and which test would be best?

MRI: A cervical spine xray can identify bony abnormalities (e.g., cervical rib) that can cause thoracic outlet syndrome and may be a good start, but it is not enough. Most experienced radiology centers have specific MRI protocols to evaluate for tos. Your pa can call the radiologist and ask how to order the test (e.g., MRI brachial plexus, MRI chest).