Optimizing parametrial aperture design utilizing HDR brachytherapy isodose distribution.

Authors

Katherine L Chapman, Thomas Jefferson UniversityFollow
Nitin Ohri, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NYFollow
Timothy N Showalter, University of Virginia, Charlottesville, VAFollow
Laura A Doyle, Thomas Jefferson UniversityFollow

Document Type

Article

Publication Date

3-1-2013

Comments

This article has been peer reviewed. It was published in: Journal of contemporary brachytherapy.

Volume 5, Issue 1, March 2013, Pages 50-4.

The published version is available at DOI: 10.5114/jcb.2013.34341. Copyright © Termedia.

Abstract

Treatment of cervical cancer includes combination of external beam radiation therapy (EBRT) and brachytherapy (BRT). Traditionally, coronal images displaying dose distribution from a ring and tandem (R&T) implant aid in construction of parametrial boost fields. This research aimed to evaluate a method of shaping parametrial fields utilizing contours created from the high-dose-rate (HDR) BRT dose distribution. Eleven patients receiving HDR-BRT via R&T were identified. The BRT and EBRT CT scans were sent to FocalSim (v4.62)(®) and fused based on bony anatomy. The contour of the HDR isodose line was transferred to the EBRT scan. The EBRT scan was sent to CMS-XIO (v4.62)(®) for planning. This process provides an automated, potentially more accurate method of matching the medial parametrial border to the HDR dose distribution. This allows for a 3D-view of dose from HDR-BRT for clinical decision-making, utilizes a paperless process and saves time over the traditional technique.

Recommended Citation

Chapman, Katherine L; Ohri, Nitin; Showalter, Timothy N; and Doyle, Laura A, "Optimizing parametrial aperture design utilizing HDR brachytherapy isodose distribution." (2013). Department of Radiation Oncology Faculty Papers. Paper 30.
https://jdc.jefferson.edu/radoncfp/30

PubMed ID

23634156