Research Article

Effects of ROI Placement on PET-Based Assessment of Tumor Response to Therapy

Figure 7

Geometric changes due to therapy for GTV and normal tissues characterized by percentage volume changes (a) and shifts (b). The bars show the median values and the error bars show the standard errors. GTVp: gross tumor volume (primary), GTVn: involved lymph node, LT: left, RT: right, sman: submandibular, sMuscle: sternocleidomastoid muscle.