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KMID : 0896219810050010145
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Journal of Daegu Health College
1981 Volume.5 No. 1 p.145 ~ p.154
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Does Calculation of Irregular Shaped Field in Cobalt- 60 Radiation Therapy
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Choi Tae-Jin
Park Mang-Cho
Park Sam-Kyun
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Abstract
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In clinical practice it is usually difficult to determine the dose precisely where on the out-side of central axis. We are usually use the tables of TAR, SA and Percent depth dose to obtain the depth dose in tissue. We assume the Pradtic center of beam and it can be taken maximum backscatter and TAR in all of the irregular shaped field. In mid-line block, the dosimetry occures a little different of BS and percent depth dose than overall field of small field.
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