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Very few Cyberknife facilities are certified to treat liver lesions. It requires specialized software, equipment and training. So while they may offer Cyberknife for other body locations, they aren't likely to offer it for liver lesions.
Because the liver fluctuates constantly due to blood flow it requires fiducials to be inserted around the lesion and the cyberknife uses them to calibrate constantly during the treatment to target only the lesion and spare healthy tissue.
I found it awesome that cyberknife was constantly adjusting to compensate for the movements of the liver due to blood flow.
Cyberknife is completely different from theraspheres or SIR spheres. It is a form of targeted SRS the same as what is used to treat brain lesions.
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