Palladium-103 – Iodine-125 – Ruthenium-106
Why is the radiation type so important?
When a radiation source is placed on the eye or into the orbit, it not only destroys the cancer but also eﬀects the surrounding normal tissues. Dr. Finger says, “for eye plaque radiation therapy –ruthenium-106, iodine-125, and palladium–103 can destroy choroidal melanoma, however, the plaque that delivers the least radiation to the retinal macula, fovea, and optic nerve will oﬀer the patient the best chance of maintaining their vision over time.” The best type of radiation is the one that destroys the tumor with the fewest side eﬀects.
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