Skin Surface Dose for Whole Breast Radiotherapy Using Personalized Breast Holder: Comparison with Various Radiotherapy Techniques and Clinical Experiences

Chiu Ping Chen, Chi Yeh Lin, Chia Chun Kuo, Tung Ho Chen, Shao Chen Lin, Kuo Hsiung Tseng, Hao Wen Cheng, Hsing Lung Chao, Sang Hue Yen, Ruo Yu Lin, Chen Ju Feng, Long Sheng Lu, Jeng Fong Chiou, Shih Ming Hsu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Purpose: Breast immobilization with personalized breast holder (PERSBRA) is a promising approach for normal organ protection during whole breast radiotherapy. The aim of this study is to evaluate the skin surface dose for breast radiotherapy with PERSBRA using different radiotherapy techniques. Materials and methods: We designed PERSBRA with three different mesh sizes (large, fine and solid) and applied them on an anthropomorphic(Rando) phantom. Treatment planning was generated using hybrid, intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT) techniques to deliver a prescribed dose of 5000 cGy in 25 fractions accordingly. Dosemeasurement with EBT3 film and TLD were taken on Rando phantom without PERSBRA, large mesh, fine mesh and solid PERSBRA for (a) tumor doses, (b) surface doses for medial field and lateral field irradiation undergoing hybrid, IMRT, VMAT techniques. Results: The tumor dose deviation was less than five percent between the measured doses of the EBT3 film and the TLD among the different techniques. The application of a PERSBRA was associated with a higher dose of the skin surface. A large mesh size of PERSBRA was associated with a lower surface dose. The findings were consistent among hybrid, IMRT, or VMAT techniques. Conclusions: Breast immobilization with PERSBRA can reduce heart toxicity but leads to a build-up of skin surface doses, which can be improved with a larger mesh design for common radiotherapy techniques.

Original languageEnglish
Article number3205
JournalCancers
Volume14
Issue number13
DOIs
Publication statusPublished - Jul 1 2022

Keywords

  • breast cancer
  • intensity-modulated radiotherapy
  • personalized breast holder (PERSBRA)
  • radiotherapy
  • surface dose
  • volumetric modulated arc therapy

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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