Figure 1From: A simple approach of three-isocenter IMRT planning for craniospinal irradiationBeam arrangements for TIOJ plan and TIJJ plan. Sagittal view shows beam arrangements for both cranial and spinal regions for TIOJ plan (a) and TIJJ plan (b). The conventional plan figure shows the placement of isocenters in a TIOJ plan has beams with shorter source to surface distances (SSDs) which make the distances between the MLC and the spinal cord shorter.Back to article page