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Moving strip technique of electron beam therapy

Journal Article:

Abstract

The fieldsize in electron beam therapy is determined by the cone size. In case of skin metastasis of a malignant tumor and so on, which need a large field size and whose area is much larger than the size of the cone, a large field size is usually produced by dividing the portals. However, the dose distribution at the border of the field becomes unequal, and hot and cold dose areas are produced according to the distance between portals. We tried the strip field technique in a large field along the long axis of the body in order to flatten the dose of the border employing the moving strip used for whole abdominal irradiation in ovarian cancer. We set the film in Mix-DP and used the strip field technique with 2.5cm steps. We discussed the relationship between the interval (distance between portals) and the flattening of the dose within the field. Skin movement due to breathing and influences on the flattening of the dose were considered. The proper flatness was obtained at depths of 0,1,2, and 3cm by setting the interval at 0.5cm. When skin movement was produced by breathing in +-1.5mm, the proper flaness was obtained also at a  More>>
Publication Date:
Dec 01, 1984
Product Type:
Journal Article
Reference Number:
AIX-16-086280; EDB-86-005512
Resource Relation:
Journal Name: Okayama Igakkai Zasshi; (Japan); Journal Volume: 96:11-12
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; RADIOTHERAPY; ELECTRON BEAMS; IRRADIATION PROCEDURES; DEPTH DOSE DISTRIBUTIONS; IRRADIATION; ISODOSE CURVES; NEOPLASMS; OVA; PATIENTS; PHANTOMS; BEAMS; DISEASES; GAMETES; GERM CELLS; LEPTON BEAMS; MEDICINE; MOCKUP; NUCLEAR MEDICINE; PARTICLE BEAMS; RADIATION DOSE DISTRIBUTIONS; RADIOLOGY; SPATIAL DOSE DISTRIBUTIONS; STRUCTURAL MODELS; THERAPY; 550602* - Medicine- External Radiation in Diagnostics- (1980-)
OSTI ID:
6527373
Research Organizations:
Okayama Univ., Japan. School of Medicine
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: OIZAA
Submitting Site:
HEDB
Size:
Pages: 1175-1182
Announcement Date:

Journal Article:

Citation Formats

Matsushima, Kishio, Wakasa, Hiroyuki, Oguri, Nobuhiro, Kitayama, Takuichi, Nakagiri, Yoshitada, Mikami, Yasutaka, Hashimoto, Keiji, Hiraki, Yoshio, and Aono, Kaname. Moving strip technique of electron beam therapy. Japan: N. p., 1984. Web.
Matsushima, Kishio, Wakasa, Hiroyuki, Oguri, Nobuhiro, Kitayama, Takuichi, Nakagiri, Yoshitada, Mikami, Yasutaka, Hashimoto, Keiji, Hiraki, Yoshio, & Aono, Kaname. Moving strip technique of electron beam therapy. Japan.
Matsushima, Kishio, Wakasa, Hiroyuki, Oguri, Nobuhiro, Kitayama, Takuichi, Nakagiri, Yoshitada, Mikami, Yasutaka, Hashimoto, Keiji, Hiraki, Yoshio, and Aono, Kaname. 1984. "Moving strip technique of electron beam therapy." Japan.
@misc{etde_6527373,
title = {Moving strip technique of electron beam therapy}
author = {Matsushima, Kishio, Wakasa, Hiroyuki, Oguri, Nobuhiro, Kitayama, Takuichi, Nakagiri, Yoshitada, Mikami, Yasutaka, Hashimoto, Keiji, Hiraki, Yoshio, and Aono, Kaname}
abstractNote = {The fieldsize in electron beam therapy is determined by the cone size. In case of skin metastasis of a malignant tumor and so on, which need a large field size and whose area is much larger than the size of the cone, a large field size is usually produced by dividing the portals. However, the dose distribution at the border of the field becomes unequal, and hot and cold dose areas are produced according to the distance between portals. We tried the strip field technique in a large field along the long axis of the body in order to flatten the dose of the border employing the moving strip used for whole abdominal irradiation in ovarian cancer. We set the film in Mix-DP and used the strip field technique with 2.5cm steps. We discussed the relationship between the interval (distance between portals) and the flattening of the dose within the field. Skin movement due to breathing and influences on the flattening of the dose were considered. The proper flatness was obtained at depths of 0,1,2, and 3cm by setting the interval at 0.5cm. When skin movement was produced by breathing in +-1.5mm, the proper flaness was obtained also at a 0.5-cm interval. It seems that smoothing is increased by breathing. An ''electron beam moving strip'' with a 2.5-cm step and 0.5-cm interval was clinically effective in the treatment of patients with skin metastasis of colon cancer. (author).}
journal = {Okayama Igakkai Zasshi; (Japan)}
volume = {96:11-12}
journal type = {AC}
place = {Japan}
year = {1984}
month = {Dec}
}