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Quantitative Analysis of the Image Layer in Rotational Panoramic Radiography

Research Project

Project/Area Number 63570952
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 外科・放射線系歯学
Research InstitutionAichi-Gakuin University

Principal Investigator

KIKUCHI Atsushi  School of Dentistry, Professor, 歯学部, 教授 (20064777)

Co-Investigator(Kenkyū-buntansha) NAITOH Munetaka  School of Dentistry, Assistant, 歯学部, 助手 (20167539)
SHIOJIMA Masaru  School of Dentistry, Associate Professor, 歯学部, 助教授 (60064888)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1989: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1988: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsRotational Panoramic Radiography / Image Layer / Modulation transfer function / 回転パラノマX線撮影法
Research Abstract

To analyze the three dimensional image layer, we measured the modulation transfer function (MTF) at the anterior to TMJ region in rotational panoramic radiography.
These MTFs enabled us to determine the information transfer factor (ITF) introduced by McDavid et al, and defined the layer thickness.
Veraview (J. Morita Corp. Japan) was used as a panoramic x-ray unit. Dupont HiPlus/ Kodak X-OMAT RP film was exposed with 1.1mm slit width to gives slit x-ray image at the fixed kV and mA. A lead slit, 0.1mm wide and 0.1mm thick was positioned at the center of the layer in each region.
The slit was moved toward the film side and the tube side at given intervals. The NTF was obtained by the method of Doi et al.
When we defined the limit of the layer by the ITF of 75, the measured layer thickness was 5.74mm in the anterior, 7.35mm in the canine, 15.1mm in the molar and 20.7mm in the TMJ region, respectively. The image layer obtained by our experiment was in fair agreement with the calculated one.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 内藤宗孝、他: "回転パノラマX線撮影法における断層域のMTF 第4報 全顎歯列弓域について" 歯科放射線. 29. 150 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Munetaka Naitoh et al: "Modulation transfer function of the image layer in rotational panoramic radiography (the 4th report)." Japanese Society of Dental Radiology 29: 150, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 内藤宗孝,他: "回転パノラマX線撮影法における断層域のMTF第4報 全顎歯列弓域について" 歯科放射線. 29. 150 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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