位置照合用 Cone-beam CT を応用した適応放射線治療の検討 Cone-beam Computed Tomography-derived Adaptive Radiotherapy

この論文にアクセスする

この論文をさがす

著者

    • 丸山 雅人 MARUYAMA Masato
    • 熊本大学医学部附属病院医療技術部診療放射線技術部門 Department of Radiological Technology, Kumamoto University Hospital
    • 村上 龍次 MURAKAMI Ryuji
    • 熊本大学大学院生命科学研究部医用画像学分野 Department of Medical Imaging, Faculty of Life Sciences, Kumamoto University
    • 中口 裕二 [他] NAKAGUCHI Yuji
    • 熊本大学医学部附属病院医療技術部診療放射線技術部門 Department of Radiological Technology, Kumamoto University Hospital
    • 筧 清孝 KAKEI Kiyotaka
    • 熊本大学医学部附属病院医療技術部診療放射線技術部門 Department of Radiological Technology, Kumamoto University Hospital
    • 竹永 枝里子 TAKENAGA Eriko
    • 熊本大学医学部附属病院医療技術部診療放射線技術部門 Department of Radiological Technology, Kumamoto University Hospital
    • 辻田 直子 TSUJITA Naoko
    • 熊本大学大学院生命科学研究部医用画像学分野 Department of Medical Imaging, Faculty of Life Sciences, Kumamoto University
    • 高田 橋司 KODABASHI Tsukasa
    • 熊本大学医学部保健学科放射線技術科学専攻 Course of Radiological Sciences, School of Health Sciences, Kumamoto University
    • 横尾 崇幸 YOKOO Takayuki
    • 熊本大学医学部保健学科放射線技術科学専攻 Course of Radiological Sciences, School of Health Sciences, Kumamoto University
    • 斉藤 哲雄 SAITO Tetsuo
    • 熊本大学医学部附属病院放射線治療科 Department of Radiation Oncology, Kumamoto University Hospital

抄録

The purpose of this study was to evaluate the reliability of cone-beam computed tomography (CBCT)-derived adaptive radiotherapy. We evaluate planning computed tomography (pCT) and CBCT in 50 patients who had undergone image guided radiotherapy (IGRT) with CBCT. Irradiated sites included head, neck, chest, abdomen, and pelvis; there were 10 patients in each group. Treatment plans including 153 beam data were recalculated based on CBCT. To compare between pCT and CBCT, we estimated CT values of normal tissues, body contour, effective depth, and monitor units (MU) calculation. The maximum difference in CT values was observed in lung estimation. The 5 mm or more differences in depth were observed in 2 beams of 2 pelvic cases, but CBCT also demonstrated a shift of abdominal wall due to intestinal motility. There were downward trends for the effective depth and MU based on CBCT, especially in lung cases. However, the differences in prescribed dose due to MU calculation were less than 5% because all patients were treated with a multifield irradiation plan. CBCT provides not only precise daily setup but also accurate anatomical information on body contour. In addition, CBCT may be considered as a useful tool for dose calculation.

収録刊行物

  • 日本放射線技術學會雜誌

    日本放射線技術學會雜誌 68(2), 162-168, 2012-02-20

    Japanese Society of Radiological Technology

参考文献:  15件中 1-15件 を表示

各種コード

  • NII論文ID(NAID)
    10030139158
  • NII書誌ID(NCID)
    AN00197784
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    03694305
  • NDL 記事登録ID
    023594088
  • NDL 請求記号
    Z19-205
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ