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Hello. I am a Certified Cancer Registrar & I have a question about Gamma Knife Radiation treatment. The info below was documented in the patients record. Is this saying the pt. received 18 gy OR 36 GY? Thanks What is the number of fractions given? 1? Thanks for taking the time to answer my questions!!
A dose of 18 Gy was delivered to the 50% isodose line, 36 Gy maximum dose. Total beam on time was 58.3 minutes. Five shots were utilized to deliver the above dose. A single 8-mm collimator was used for all 5 shots