A NEW METHOD OF CALCULATING SOURCE NUMBER WITH CT FOR I-125 PROSTATE BRACHYTHERAPY

• AOKI Manabu

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• TAKAGI Sayako

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• FUKUDA Ichirou

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• HONDA Chikara

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• KOBAYASHI Masao

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• OOWAKI Kazuhiko

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

• KANEHIRA Chihiro

  Division of Radiation oncology, Department of Radiology, Jikei University School of Medicine

Bibliographic Information

Other Title

• 前立腺小線源療法におけるCTを用いた新たな線源発注法

Abstract

We treated 65 patients, from October 2003 to October 2004, with I-125 prostate brachytherapy who had prostate confined adenocarcinoma. Thirty-one patients had pre-implant CT on the day before prostate implantation. We compared pre-implant prostate volume by TRUS and CT. Eighteen patients had hormonal therapy at least 3 months before the volume study by TRUS. Average prostate volume by TRUS and CT were 23.74 (9.0-39.63) cm³, and 24.23 (9.36-41.38) cm³. The average differences of prostate volume by the two modalities in each patient were 1.26 (0.05-3.49) cm³, and the median differences were 0.99 cm³. There was no definite difference between the two modalities. The median number of seeds that were planned by TRUS volume study and CT volume study were 64 (range 46-85), and 65 (range 45-86) respectively. The average differences of the number of seeds by the two modalities in each patient was 0.6 (range 0-4). We believe the volume study by CT can be used as substitute for an ordinary volume study by TRUS.

Journal

• The Journal of JASTRO

  The Journal of JASTRO 17 (4), 221-226, 2006

  Japanese Society for Therapeutic Radiology and Oncology

Keywords

• Prostate brachytherapy
• Prostate volume
• CT
• TRUS

Details

• CRID: 1390282679306761472
• NII Article ID: 130004497083
• NII Article ID: 10021281931
• NII Book ID: AN10123988
• DOI: 10.11182/jastro.17.221
• ISSN: 18819885
• ISSN: 10409564
• Web Site: https://search.jamas.or.jp/link/ui/2006094474
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed