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EVALUATION OF IMAGE PROCESSING TECHNIQUES OF PHOTON-COUNTING X-RAY RADIOGRAPHY IN THORACIC DIAGNOSTIC IMAGING

Research Project

Project/Area Number 09670933
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

ITOUJI Eiichiro  KOBE UNIVERSITY,HOSPITAL,LECTURE, 医学部・附属病院, 講師 (90243302)

Co-Investigator(Kenkyū-buntansha) ADCHI Shuji  KOBE UNIVERSITY,SCHOOL OF MEDICINE,ASSOCIATE PROFESSOR, 医学部, 助教授 (60159407)
KUSUMOTO Masahiko  NATIONAL CANCER CENTER CENTRAL HOSPITAL,DIVISION OF DIAGNOSTIC RADIOLOGY,STUFF, 放射線診断部, 医員 (90252767)
YAMASAKI Katsuhito  KOBE UNIVERSITY,HOSPITAL,LECTURER, 医学部・附属病院, 講師 (50210381)
河野 通雄  神戸大学, 医学部, 教授 (60030938)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
KeywordsChest Radiography / Digital Radiography / Photon Counting X-ray Radiography / Image Processing / Chest Disease
Research Abstract

[INTRODUCTION] Photon counting X-ray radiography (quantum radiography : QR) offers digital images produced by directly measuring the number of photons of an X-ray which have permeated through the object. The photons are calculated by means of CdTe multi-line sensor. It gives a high quality image with the features of high sensitivity and good linearity over the wide range of density. X-ray machine used is newly devised QR system (Shimadzu, Kyoto, Japan).
[PURPOSE] To evaluate the utility of QR on detection of pulmonary lesions, clinical studies were performed with comparison of conventional chest radiography (CONV).
[MATERIALS AND METHODS] Forty two patients were included in this study ; eighteen lung cancer, nine metastatic lung tumor, five interstitial pneumonia, four tuberculosis, one lymphoma, one hamartoma, one hypersensitivity pneumonitis, one viral pneumonia, one pneumoconiosis, one organizing pneumonia. Eight radiologists scored QR comparing with CONV by 7-point rating scale metho … More d. All observers scored the description of normal structures and abnormal shadows in the high film density area (HFDA : peripheral lung field) and in the low film density area (LEDA : retrocardiac or subdiaphragmatic area). The results were analyzed by Wilcoxon signed rank sum test.
[RESULTS] QR was superior to CONV in the depiction of all normal structures and all kinds of abnormal shadows in the whole area (p<0.000 1). QR was superior to CONY in the-description of multiple pulmonary nodules especially in LFDA.
[DISCUSSION] QR is a kind of digital imaging technique. This is quite different from conventional radiography or current digital radiography on the point that QR directly counts the number of photons which come into the semi-conductive sensor unit without any other media, for example, screen-film system or storage phosphor plate. Clinically, QR was superior to CONY for description of many kinds of normal structures and abnormal shadows in the whole film density area. This result might reflect the superior density resolution of QR and its superiority of density resolution might surpass slight inferiority of spatial resolution especially in the clinical evaluation. QR was thought to be a very useful digital diagnostic imaging of the thorax with wide dynamic range. Less

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 木村 和彦: "胸部画像診断における量子計数型X線撮影法の画像処理法に関する研究" 日本医学放射線学会雑誌. 57巻・12号. 791-800 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 糸氏 英一郎: "胸部領域におけるdigital radiography" 画像診断. 19巻・2号. 198-209 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 足立 秀治: "胸部単純X線診断-検査法と読影の要点- 2.検査法" 画像診断. 19巻・4号(発行予定). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 糸氏 英一郎(分担): "びまん性肺疾患の画像診断指針" 医学書院, 122 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuhiko Kimura, Eiichiro Itouji, Michio Kono: "Usefulness of Photon Counting X-ray radiography for Diagnostic Imaging of the Thorax : Experimental and clinical study" NIPPON ACTA RADIOLOGICA. 57-12. 791-800 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Eiichiro Itouji, Kazuhiko Kimura, Michio Kono: "Digital Radiography of the Chest" Japanese Journal of Diagnostic Imaging. 19-2. 198-209 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shuji Adachi, Eiichiro Itouji, Arata Motoyama, Yoshio Kojima, Yoshiharu Ohno, Kazuro Sugimura, Michio Kono: "Chest Radiography-Techniques and Diagnostic Essentials 2.Standard Roentgenographic Examination" Japanese Journal of Diagnostic Imaging. 19-4 (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 木村 和彦: "胸部画像診断における量子計数型X線撮影法の画像処理法に関する研究" 日本医学放射線学会雑誌. 57巻12号. 791-800 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 糸氏 英一郎: "胸部領域におけるdigital radiography" 画像診断. 19巻2号. 198-209 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 足立 秀治: "胸部単純X線診断-検査法と読影の要点- 2.検査法" 画像診断. 19巻4号(発行予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 糸氏 英一郎(分担): "びまん性肺疾患の画像診断指針" 医学書院, 122 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 木村和彦: "量子計数型X線撮影法の胸部疾患の画像診断における有用性の検討" 日本医学放射線学会雑誌. 57巻・12号. 791-800 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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