IMRT
Intensity-modulated radiation therapy (IMRT) is a novel method of delivering radiation to a tumor target, shaping the desired dose or zone of radiation to the contours of the tumor. At the same time the dose is kept low to adjacent vital tissues.
The snapshot below shows three views of a prostate gland. The turquoise line indicates the prostate gland which is also the high dose. The white lines are the beams going through the prostate.
The snapshot below shows three views of a prostate gland. The turquoise line indicates the prostate gland which is also the high dose. The white lines are the beams going through the prostate.
IMRT treatment is for low to intermediate risk prostate cancer, confined to the gland following NCCN dose guidelines. It is delivered 1.8Gy daily dose for 44 treatments, once per day, Monday through Friday to a total dose of 79.2 Gy. The machine acquires the target by indentifing 4 implanted gold Visicoil (twin line) fiducial markers inserted into the prostate gland.