Cost-effective immobilization for whole brain radiation therapy.

Autor: Rubinstein AE; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Ingram WS; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Anderson BM; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Gay SS; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA., Fave XJ; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Ger RB; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., McCarroll RE; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Owens CA; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Netherton TJ; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Kisling KD; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Court LE; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Yang J; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Li Y; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA., Lee J; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA., Mackin DS; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA., Cardenas CE; Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.; Graduate School of Biomedical Sciences, The University of Texas Health Sciences Center, Houston, TX, USA.
Jazyk: angličtina
Zdroj: Journal of applied clinical medical physics [J Appl Clin Med Phys] 2017 Jul; Vol. 18 (4), pp. 116-122. Date of Electronic Publication: 2017 Jun 06.
DOI: 10.1002/acm2.12101
Abstrakt: To investigate the inter- and intra-fraction motion associated with the use of a low-cost tape immobilization technique as an alternative to thermoplastic immobilization masks for whole-brain treatments. The results of this study may be of interest to clinical staff with severely limited resources (e.g., in low-income countries) and also when treating patients who cannot tolerate standard immobilization masks. Setup reproducibility of eight healthy volunteers was assessed for two different immobilization techniques. (a) One strip of tape was placed across the volunteer's forehead and attached to the sides of the treatment table. (b) A second strip was added to the first, under the chin, and secured to the table above the volunteer's head. After initial positioning, anterior and lateral photographs were acquired. Volunteers were positioned five times with each technique to allow calculation of inter-fraction reproducibility measurements. To estimate intra-fraction reproducibility, 5-minute anterior and lateral videos were taken for each technique per volunteer. An in-house software was used to analyze the photos and videos to assess setup reproducibility. The maximum intra-fraction displacement for all volunteers was 2.8 mm. Intra-fraction motion increased with time on table. The maximum inter-fraction range of positions for all volunteers was 5.4 mm. The magnitude of inter-fraction and intra-fraction motion found using the "1-strip" and "2-strip" tape immobilization techniques was comparable to motion restrictions provided by a thermoplastic mask for whole-brain radiotherapy. The results suggest that tape-based immobilization techniques represent an economical and useful alternative to the thermoplastic mask.
(© 2017 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine.)
Databáze: MEDLINE
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