Several irradiation method are compared each other in this page. This case has pelvic mass of malignant lymphoma (after chemotherapy). Mass is stuck to bowel.

Opposing portal irradiation                                     °∆BOX°« irradiation      

       

  In opposing portal irradiation, hot point is usually generated in a back side. The exposure of bowel is same dose that of mass. In BOX irradiation, hot point is generated out of mass, and the exposure of bowel is also high. 

last modification date: 2006/04/05