Advanced Physics for Brachytherapy 2018

BRT versus EBRT Similarities and Differences

• Beam Delivery System in BRT Beam

= Implanted Catheter/Needle/Applicator MLC Settings = Source moving patterns within implanted Catheter/ Needle/Applicator Monitor Units = Dwell Times

Thus “beams” become for BRT patient-dependent parameters , that requires 3D reconstruction (Localization: Imaging, …) and registration to anatomy