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Title: Treatment planning for SBRT using automated field delivery: A case study

Stereotactic body radiation therapy (SBRT) treatment planning and delivery can be accomplished using a variety of techniques that achieve highly conformal dose distributions. Herein, we describe a template-based automated treatment field approach that enables rapid delivery of more than 20 coplanar fields. A case study is presented to demonstrate how modest adaptations to traditional SBRT planning can be implemented to take clinical advantage of this technology. Treatment was planned for a left-sided lung lesion adjacent to the chest wall using 25 coplanar treatment fields spaced at 11° intervals. The plan spares the contralateral lung and is in compliance with the conformality standards set forth in Radiation Therapy and Oncology Group protocol 0915, and the dose tolerances found in the report of the American Association of Physicists in Medicine Task Group 101. Using a standard template, treatment planning was accomplished in less than 20 minutes, and each 10 Gy fraction was delivered in approximately 5.4 minutes. For those centers equipped with linear accelerators capable of automated treatment field delivery, the use of more than 20 coplanar fields is a viable SBRT planning approach and yields excellent conformality and quality combined with rapid planning and treatment delivery. Although the case study discussesmore » a laterally located lung lesion, this technique can be applied to centrally located tumors with similar results.« less
Authors:
 [1] ;  [2] ;  [1] ;  [2] ;  [3] ;  [1] ;  [2]
  1. Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)
  2. (United States)
  3. Department of Radiation Oncology, Veterans Affairs Ann Arbor Health Care System, Ann Arbor, MI (United States)
Publication Date:
OSTI Identifier:
22462423
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Dosimetry; Journal Volume: 40; Journal Issue: 1; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; APPROXIMATIONS; CHEST; COMPLIANCE; DELIVERY; LINEAR ACCELERATORS; LUNGS; NEOPLASMS; PLANNING; RADIATION DOSE DISTRIBUTIONS; RADIATION DOSES; RADIOTHERAPY; STANDARDS