Radiotherapy for prostate cancer Toshio Ohashi 1 1Department of Radiation Oncology Keio University School of Medicine Keyword: 前立腺癌 , 放射線治療 , 強度変調放射線治療 , 小線源治療 pp.111-116
Published Date 2019/2/10
DOI https://doi.org/10.18888/rp.0000000747
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The two main types of radiotherapy used for prostate cancer are external beam radiotherapy and brachytherapy. Intensity-modulated radiotherapy(IMRT)can achieve highly conformal dose shapes with improved target coverage and sparing of normal tissues compared with conventional radiotherapy techniques. Image-guided radiotherapy(IGRT)is the use of imaging during radiotherapy to improve the precision and accuracy of treatment delivery. Brachytherapy is a type of radiotherapy in which a radioactive source is placed directly into or next to a tissue with a cancer in it. Low-dose-rate(LDR)brachytherapy or seed implant involves the insertion of permanent radioactive sources directly into the prostate.

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