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Tytuł:
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[Application of Real-time Variable Shape Tungsten Rubber for Nail Radiation Protection in the Total Skin Electron Beam (TSEB) Therapy].
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Autorzy:
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Yanagi Y; Department of Radiology, Shiga University of Medical Science Hospital.
Tamura M; Department of Medical Physics, Graduate School of Medical Sciences, Kindai University.
Monzen H; Department of Medical Physics, Graduate School of Medical Sciences, Kindai University.
Matsumoto K; Department of Medical Physics, Graduate School of Medical Sciences, Kindai University.; Department of Radiology, Kindai University Hospital.
Takei Y; Department of Medical Physics, Graduate School of Medical Sciences, Kindai University.; Department of Radiology, Kindai University Nara Hospital.
Noma K; Department of Radiology, Shiga University of Medical Science Hospital.
Kida T; Department of Radiology, Shiga University of Medical Science Hospital.
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Źródło:
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Nihon Hoshasen Gijutsu Gakkai zasshi [Nihon Hoshasen Gijutsu Gakkai Zasshi] 2021; Vol. 77 (2), pp. 145-152.
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Typ publikacji:
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Journal Article
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Język:
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Japanese
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Imprint Name(s):
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Original Publication: Kyoto : Nihon Hōshasen Gijutsu Gakkai
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MeSH Terms:
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Radiation Protection*
Electrons ; Phantoms, Imaging ; Radiotherapy Dosage ; Rubber ; Tungsten
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Contributed Indexing:
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Keywords: mycosis fungoides (MF); nail radiation protection; real-time variable shape tungsten rubber (STR); total skin electron beam (TSEB)
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Substance Nomenclature:
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9006-04-6 (Rubber)
V9306CXO6G (Tungsten)
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Entry Date(s):
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Date Created: 20210222 Date Completed: 20210223 Latest Revision: 20210223
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Update Code:
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20240105
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DOI:
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10.6009/jjrt.2021_JSRT_77.2.145
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PMID:
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33612692
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Purpose: This study investigated whether real-time variable shape tungsten rubber (STR) could be applied for nail radiation protection in total skin electron beam (TSEB) therapy.
Methods: Simulated finger phantoms were made from syringes filled with physiological saline of volumes 5, 10, 20, and 30 ml (inner diameters of 14.1, 17.0, 21.7, and 25.3 mm, respectively). Gafchromic film was applied to the phantom, and lead (thickness 1-3 mm) or STR (thickness 1-4 mm) with an area of 4´1.5 cm was used to cover the film. A 6 MeV electron beam with an 8 mm acrylic board was then used to irradiate the phantom. The source-surface distance (SSD) was 444 cm, the field size was 36´36 cm at SSD of 100 cm without an electron applicator, and the monitor unit was 2000 MU. The shielding rates were obtained from the dose profiles.
Results: The mean values of the shielding rate values for all phantoms were 50.1, 97.6, and 98.7% for 1, 2, and 3 mm of lead, respectively, and -13.6, 53.9, 91.2, and 99.4% for 1, 2, 3, and 4 mm of STR, respectively.
Conclusion: STR with a thickness of 4 mm had the same shielding properties as lead with a thickness of 3 mm, which was an approximately 100% shielding rate. STR could therefore be used in TSEB therapy instead of lead.
