Brain Tumours

Just some of the issues…

o Placement of centre of brain fields o Posterior angulation of lateral fields to spare contralateral lens o MLC vs custom blocks for shielding o High vs low junction in the cervical region o Use of couch rotation or match line wedge for junction in the cervical region o Use of a gap/feathering of junction in the cervical region o Second field vs extended SSD for spinal axis