| Project/Area Number |
06672002
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Surgical dentistry
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MORIYA Yoshiyuki Graduate of Medicine, Kyoto University Assistant Professor, 医学研究科, 助手 (70221637)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Hiroaki Graduate of Medicine, Kyoto University Assistant Professor, 医学研究科, 助手 (40260624)
SAGAMI Natsuki Graduate of Medicine, Kyoto University Lecturer, 医学研究科, 講師 (40148721)
MURAKAMI Ken-ichiro Graduate of Medicine, Kyoto University Associate Professor, 医学研究科, 助教授 (00174269)
TSUTSUMI Sadami Research Center for Biomedical Engineering, Kyoto University, Professor, 生体医療工学研究センター, 教授 (00028739)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | temporomandibular joint / MR image / 3D imaging / disk / morphology / voxel model / personal computer |
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| Research Abstract |
We had developed a system using surface model to reconstruct a three dimensional (3D) image of the temporomandibular joint (TMJ) from MR images. 3D surface model could not be adapted only to disk perforation case. Therefore it was necessary for management to fall cases of TMJ to develop a new system using voxel model.
We prepared good surroundings for voxel model to input digital information of MR image to the personal computer. Since complicated process were requested because of the massive data and computational requirements for 3D reconstruction, simplification of steps of procedure was demanded. It was resolved by data exchange between graphic computer and personal computer.
To obtain a smooth three dimensional (3D) figure of the temporomandibular joint (TMJ) from MR images, utilizing voxel model, many slices of MRI sagittal sections were required. 3D Fast GRASS method could supply more than 60 series of MR images with 0.4mm slices from volume scanned TMJ data. The TMJ 3D reconstructive image was greatly improved in smoothness and accuracy.
3D reconstructive images from MRI are exprected to be adapted to clinical use because they give us clear information about relative position of the fossa, eminence, condyle and disk, and disk configuration of both lateral and medial sections.
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