Volumetric modulated arc therapy based total body irradiation: Workflow and clinical experience with an indexed rotational immobilization system

Luo Ouyang, Michael Folkerts, You Zhang, Brian Hrycushko, Richard Lamphier, Pam Lee, Eric Chambers, Ezequiel Ramirez, Robert Reynolds, Yulong Yan, Steve B. Jiang, Robert Timmerman, Neil Desai, Ramzi Abdulrahman, Xuejun Gu

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

An indexed rotational immobilization system was developed for supine total body irradiation (TBI). Treatment plans had multi-isocentric volumetric modulated arc therapy (VMAT) beams to the upper body and parallelopposed fields to the lower body, with a 12 Gy prescription dose to > 90% of the body and mean lung dose ~8 Gy. In the end-to-end test, point dose measurements had < 10% error. Compared to conventional TBI, the VMAT-based TBI technique increased the mean dose to the body by ~1.0-1.5 Gy and decreased the mean dose to the lung by ~1.0-1.5 Gy. Overall treatment time was ~1.5 h, similar to conventional TBI.

Original languageEnglish (US)
Pages (from-to)22-25
Number of pages4
JournalPhysics and Imaging in Radiation Oncology
Volume4
DOIs
StatePublished - Oct 1 2017

Keywords

  • Immobilization system
  • Total body irradiation
  • Volumetric modulated arc therapy

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiation

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