1.      A patient is being treated with craniospinal axis ra…

1.      A patient is being treated with craniospinal axis radiation therapy. If the cranial field has a total length of 24 cm and is treated at 100 SSD and the spinal field is 16 cm in length and is also to be treated at 100 SSD calculate the skin gap if the fields are to converge at a depth of 8 cm.