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The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75.

Publication ,  Journal Article
Murphy, MJ; Balter, J; Balter, S; BenComo, JA; Das, IJ; Jiang, SB; Ma, CM; Olivera, GH; Rodebaugh, RF; Ruchala, KJ; Shirato, H; Yin, F-F
Published in: Med Phys
October 2007

Radiographic image guidance has emerged as the new paradigm for patient positioning, target localization, and external beam alignment in radiotherapy. Although widely varied in modality and method, all radiographic guidance techniques have one thing in common--they can give a significant radiation dose to the patient. As with all medical uses of ionizing radiation, the general view is that this exposure should be carefully managed. The philosophy for dose management adopted by the diagnostic imaging community is summarized by the acronym ALARA, i.e., as low as reasonably achievable. But unlike the general situation with diagnostic imaging and image-guided surgery, image-guided radiotherapy (IGRT) adds the imaging dose to an already high level of therapeutic radiation. There is furthermore an interplay between increased imaging and improved therapeutic dose conformity that suggests the possibility of optimizing rather than simply minimizing the imaging dose. For this reason, the management of imaging dose during radiotherapy is a different problem than its management during routine diagnostic or image-guided surgical procedures. The imaging dose received as part of a radiotherapy treatment has long been regarded as negligible and thus has been quantified in a fairly loose manner. On the other hand, radiation oncologists examine the therapy dose distribution in minute detail. The introduction of more intensive imaging procedures for IGRT now obligates the clinician to evaluate therapeutic and imaging doses in a more balanced manner. This task group is charged with addressing the issue of radiation dose delivered via image guidance techniques during radiotherapy. The group has developed this charge into three objectives: (1) Compile an overview of image-guidance techniques and their associated radiation dose levels, to provide the clinician using a particular set of image guidance techniques with enough data to estimate the total diagnostic dose for a specific treatment scenario, (2) identify ways to reduce the total imaging dose without sacrificing essential imaging information, and (3) recommend optimization strategies to trade off imaging dose with improvements in therapeutic dose delivery. The end goal is to enable the design of image guidance regimens that are as effective and efficient as possible.

Duke Scholars

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Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2007

Volume

34

Issue

10

Start / End Page

4041 / 4063

Location

United States

Related Subject Headings

  • United States
  • Societies, Scientific
  • Radiotherapy, Intensity-Modulated
  • Radiotherapy Planning, Computer-Assisted
  • Radiation Oncology
  • Nuclear Medicine & Medical Imaging
  • Neoplasms
  • Image Processing, Computer-Assisted
  • Humans
  • Equipment Design
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Murphy, M. J., Balter, J., Balter, S., BenComo, J. A., Das, I. J., Jiang, S. B., … Yin, F.-F. (2007). The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75. Med Phys, 34(10), 4041–4063. https://doi.org/10.1118/1.2775667
Murphy, Martin J., James Balter, Stephen Balter, Jose A. BenComo, Indra J. Das, Steve B. Jiang, C. M. Ma, et al. “The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75.Med Phys 34, no. 10 (October 2007): 4041–63. https://doi.org/10.1118/1.2775667.
Murphy MJ, Balter J, Balter S, BenComo JA, Das IJ, Jiang SB, et al. The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75. Med Phys. 2007 Oct;34(10):4041–63.
Murphy, Martin J., et al. “The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75.Med Phys, vol. 34, no. 10, Oct. 2007, pp. 4041–63. Pubmed, doi:10.1118/1.2775667.
Murphy MJ, Balter J, Balter S, BenComo JA, Das IJ, Jiang SB, Ma CM, Olivera GH, Rodebaugh RF, Ruchala KJ, Shirato H, Yin F-F. The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75. Med Phys. 2007 Oct;34(10):4041–4063.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2007

Volume

34

Issue

10

Start / End Page

4041 / 4063

Location

United States

Related Subject Headings

  • United States
  • Societies, Scientific
  • Radiotherapy, Intensity-Modulated
  • Radiotherapy Planning, Computer-Assisted
  • Radiation Oncology
  • Nuclear Medicine & Medical Imaging
  • Neoplasms
  • Image Processing, Computer-Assisted
  • Humans
  • Equipment Design