543 / 1116
MRI - GEC/ESTRO 2005 → 2013
• T2 weighted MR images will provide optimal
anatomical definition
but T1 weighted images will
provide more accurate catheter reconstruction
• CTV + plus any macroscopic extracapsular disease or
seminal vesicle involvement identified on diagnostic
images expanded by 3 mm to encompass potential
microscopic disease
• GTV may be defined, CTV subvolumes may be defined
Hoskin et al. Radiot Oncol 2013