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1989 Fiscal Year Final Research Report Summary

Development of the New Digital Panoramic Tomography

Research Project

Project/Area Number 63870082
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 外科・放射線系歯学
Research InstitutionNihon University school of Dentistry

Principal Investigator

SAIRENJI Eiko  Nihon Unv.DENT., Professor, 歯学部, 教授 (40058839)

Co-Investigator(Kenkyū-buntansha) ARAI Yoshinori  Nihon Unv.DENT., Assistant, 歯学部, 助手 (20212607)
OHKI Tohru  Nihon Unv.DENT., Assistant, 歯学部・放射線, 助手 (20152069)
HASIMOTO Koji  Nihon Unv.DENT., Lecturer, 歯学部, 講師 (90139197)
Project Period (FY) 1988 – 1989
KeywordsPanoramic tomography / Digital subtraction / Tilted tooth / Ghost image / Computer system / Radiology
Research Abstract

In the panoramic tomography,the X-ray beam passing through a object contains vast informations of the numerous tomographic layers. However, we usually don't use the informations of all the other tomographic layers except that of focus layer. We made an attempt to develop the new digital panoramic tomograph system. The system is composed of (1)screen,(2)SIT-TV camera,(3)optical-Disk,(4)frame-memory(512x,1024x32bitx2) and (5)32bit computer system. It can be possible to reconstruct any desired tomographic image with only one scanning.
It is also possible to erase the ghost image which is clinical issues on diagnosis. The distal panoramic tomography can be obtained without ghost image as a result of its subtraction from original image using the computer simulation.
And the conventional panoramic tomography is not suitable the image of tilted tooth because of its difficulty to get the focus on the tomographic layer. To resolve this problem,the tomographic layer is set up along with each tooth axis so that even tilted tooth is brought into focus. As a result the image of any desired layer has much better resolution than that of conventional panoramic tomography.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 新井嘉則: "画像再構成時間の短縮と画質の向上を目的としたデジタルパノラマ撮影装置の開発試作" 歯科放射線. 27. 302-311 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西連寺永康: "歯顎顔面域用デジタルパノラマグラフ装置の開発" 歯科放射線学会誌.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 新井嘉則: "オルソパントモグラフィにおけるボケ像のコンピュ-タシュミレ-ション" 歯科放射線学会誌.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 新井嘉則: "歯軸傾斜を考慮したデジタルパノラマ像の合成" 歯科放射線学会誌.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshinori ARAI: "An Improvement Digital Panoramic Tomograph System" Dental Radiol. vol28, p302-311, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Eiko SAIRENJI: "Development of the New Digital Panoramic Tomography" Dental Radiol. prep.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshinori ARAI: "Computer simulation of the ghost image on the Panoramic Tomography" Dental Radiol. prep.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshinori ARAI: "Try to reconstruct Digital Panoramic Tomography even tilted tooth for 3-dimensional focus layer" Dental Radiol. prep.

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

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Published: 1993-03-26  

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