Impact of prone versus supine positioning on small bowel dose with pelvic intensity modulated radiation therapy.

ABSTRACT:

Purpose

To report the results of a prospective study that compares small bowel doses during prone and supine pelvic intensity modulated radiation therapy.

Methods and materials

Ten patients receiving pelvic radiation therapy each had 2 intensity modulated radiation therapy plans generated: supine and prone on a belly board (PBB). Computed tomography on rails was performed weekly throughout treatment in both positions (10 scans per patient). After image fusion, doses to small bowel (SB) loops and clinical target volume were calculated for each scan. Changes between the planned and received doses were analyzed and compared between positions. The impact of bladder filling on SB dose was also assessed.

Results

Prone treatment was associated with significantly lower volume

SUBMITTER: Gonzalez VJ 

PROVIDER: S-EPMC5514253 | biostudies-literature | 2017 Apr-Jun

REPOSITORIES: biostudies-literature