Radiotherapy of Breast Cancer in Laterally Tilted Prone vs. Supine Position: What about the Internal Mammary Chain?

ABSTRACT:

Background

In the multimodal breast-conserving curative therapy of some high-risk breast cancer patients, extended external beam radiotherapy (EBRT) not only to the breast but also to the supraclavicular fossa and the internal mammary chain (parasternal region (PSR)) is indicated. We report a dosimetric study on the EBRT of the breast ("B") and the breast including PSR ("B + PSR"), comparing the supine and the laterally tilted prone patient positions in free breathing.

Methods

The planning CT scans of 20 left- and 20 right-sided patients were analyzed. EBRT plans were calculated with 3D conformal EBRT (3D) and with intensity-modulated EBRT (IMRT) for "B" and "B + PSR" in the prone and supine positions. The mean and threshold doses were computed. The quality of EBRT plans was

SUBMITTER: Temme N 

PROVIDER: S-EPMC9031123 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature