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2003 Fiscal Year Final Research Report Summary

Virtual CT navigation image of the hepato-biliary system

Research Project

Project/Area Number 14570892
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionKURUME UNIVERSITY

Principal Investigator

UCHIDA Masafumi  Kurume Univ., Dept of Radiology, Assistant of professor, 医学部, 講師 (50168704)

Co-Investigator(Kenkyū-buntansha) NISHIMURA Hiroshi  Kurume Univ., Dept of Radiology., Associate of professor, 医学部, 助教授 (20164593)
ABE Toshi  Kurume Univ., Dept of Radiology, Assistant of professor, 医学部, 講師 (90167940)
SHINAGAWA Masaharu  Kurume Univ., Dept of Radiology, Assistant, 医学部, 助手 (70279181)
HAYABUCHI Naofumi  Kurume Univ., Dept of Radiology., Professor, 医学部, 教授 (20108731)
Project Period (FY) 2002 – 2003
KeywordsCT / Liver / Biliary system / Fusion / Three-dimensional image / Simulation / Navigation
Research Abstract

Seventy-four consecutive patients were referred for the evaluation of hepatobiliary disease after discovery based on clinical symptoms and ultrasound. The CT scan started at the level of the diaphragm and covered the entire liver, common bile duct and pancreas. Using a power injector, contrast medium was injected through a 20-G high-pressure intravenous catheter at a rate of 4 mL/sec in an antecubital vein. The volume of contrast medium delivered was 2 mL per kilogram of body weight. Fourteen patients who underwent percutaneous transhepatic bileduct drainage (PTBD) to eliminate obstructive jaundice were injected by PTBD tube of contrast medium in addition to intravenous injection. The raw data was transferred automatically to a workstation in a 512 x 512 pixel format via Ethernet. The 3-or 4-phase source 2D CT images were reviewed and analyzed for 3D reconstruction and to obtain a fusion image. Virtual CT navigation image were obtained using virtual endoscopic technique on the workstation. These images were analyzed qualitatively based on visualization of the critical structures. While evaluating these frill scale-3D and virtual images obtained by our institute, these images were clearly depicted in most of cases. The depict of organs can be reconstructed while there were a significant difference of attenuation value between the organ and a region around structure, but the several cases were difficult to produce 3D image in small size and the equal attenuation value around the structure. We emphasize that our new technique may contribute to the laparoscopy during surgery as the aid of understanding of anatomical structures in these organs. Our images are extremely helpful to the surgeon in localizing lesions and minimizing operating time, the extent of surgical resection, and blood loss.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 内田政史: "肝・胆道のvirtual CT navigation image作成の試み"日本コンピューター支援外科学会会誌. 9(4). 62-66 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masafumi Uchida: "Evolution of Virtual CT Laparoscopy for Preoperative Imaging in Laparoscopic surgery"Kurume Medical journal. 49(1,2). 47-52 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masafumi Uchida: "Rotational Three-dimensional Cholangiography-Initial Clinical Experience-"Radiation Medicine. 20(4). 213-215 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 内田政史: "Multislice CTを用いた胆・膵領域のmultiphase fusion image作成の試み"臨床放射線. 48(2). 286-291 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 内田政史: "胆道疾患の三次元simulation, navigation画像"外科治療. 89(5). 536-542 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 内田政史: "multislice CTを用いた末梢血管病変の三次元画像の有用性"臨床画像. 19(11). 1168-1172 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 内田政史: "なるほど 医用三次元画像 第6章 応用編 13,14"秀潤社. 335 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masafumi Uchida: "Evolution of Virtual CT Laparoscopy for Preoperative Imaging in Laparoscopic surgery"Kurume Medical Journal. Vol.49 No 1, 2. 47-52 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masafumi Uchida: "Rotational Three-dimensional Cholangiography-Initial Clinical Experience-"Radiation Medicine. Vol.20 No 4. 213-215 (2002)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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