ID 291
Title Transcription
スパイラル CT オ モチイタ ガクカンセツ ノ サンジゲン ヒョウカホウ
Title Alternative
Three-dimensional Evaluation of Temporomandibular Joint Using Spiral CT
Author
Hosoki, Maki Department of Fixed Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Satsuma, Toyoko Department of Fixed Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School KAKEN Search Researchers
Takahashi, Akira Department of General Dentistry, University Medical and Dental Hospital, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Nishigawa, Keisuke Department of General Dentistry, University Medical and Dental Hospital, The University of Tokushima KAKEN Search Researchers
Hosoki, Hidehiko Department of General Dentistry, University Medical and Dental Hospital, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Nakano, Masanori Department of Fixed Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Bando, Eiichi Department of Fixed Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Takeuchi, Hisahiro Department of General Dentistry, University Medical and Dental Hospital, The University of Tokushima KAKEN Search Researchers
Sugawara, Chieko Department of Oral and Maxillofacial Dentistry, Institute of Health Biosciences, The University of Tokushima Graduate School KAKEN Search Researchers
Iwasaki, Hirokazu Department of Oral and Maxillofacial Dentistry, Institute of Health Biosciences, The University of Tokushima Graduate School KAKEN Search Researchers
Keywords
顎関節
スパイラルCT
三次元評価
Content Type
Departmental Bulletin Paper
Description
Three-dimensional (3-D) image reconstructed from Computed Tomography (CT) data is an ef>cient method to evaluate temporomandibular joint (TMJ) morphologically. Even the 3-D image reconstructed from spiral CT data has some distortion, typically along to the table feed direction, very few studies were reported about accuracy of reconstructed 3-D image size. The purpose of this research was to evaluate the distortion on 3-D image reconstructed with spiral CT (Somatom Plas4, Siemens Co, Germany) quantitatively. We used three imaging targets, eight ceramic balls placed at corners of cubic frame, a calibration cube that has the CT value nearly equal to cortex bone of human dried mandibular head. We evaluated relation between a threshold level of CT image processing and reconstructed 3-D image size with a custom-made computer program. CT data of ceramic balls clari>ed changes of the reconstructed image, -0.215mm for table feed direction and less than ±0.006mm for the other directions. The calibration cube was used for the arrangement of optimal scanning condition (reconstruction mode, collimation, reconstitution interval) and evaluation of reconstructed image size. The distortion of the image was +0.207mm for table feed direction and less than +0.029mm for the other directions. Changes of dried skull TMJ image reconstructed with the optimal scanning condition were -1.463mm for lateral direction of the condylar head, -0.956mm for back and forth direction and -0.580mm for table feed direction. Results of this research suggested that the level of the 3-D image distortion was mostly affected with the scanning condition. And the size of 3-D image was susceptible to the threshold level of CT image processing. Consequently, we think that the standardization of scanning condition should be concerned for the quantitative evaluation of 3-D TMJ image using CT data.
Journal Title
四国歯学会雑誌
ISSN
09146091
NCID
AN10050046
Volume
19
Issue
2
Start Page
231
End Page
238
Sort Key
231
Published Date
2007-01
Remark
公開日:2010年1月24日で登録したコンテンツは、国立情報学研究所において電子化したものです。
EDB ID
FullText File
language
jpn
departments
Oral Sciences
University Hospital
Report Type
原著論文