A patient is being simulated for prone craniospinal treatmen…
A patient is being simulated for prone craniospinal treatment. The upper spine field size is 6 x 38 at 100 SSD with the gantry and collimator at 0. The lower spine field is 12 x 24 at 100 SSD with the gantry and collimator at 0. The field size for the brain is 15 x 22 with a separation of 18cm: Calculate the skin gap if you want the spinal fields to intersect at a depth of 6 cm.
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