1996 Fiscal Year Final Research Report Summary
Development of ultrasonographic computed tomography for TMJ imaging
| Project/Area Number |
06557107
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 試験 |
|---|
| Research Field |
補綴理工系歯学
|
|---|
| Research Institution | KYUSHU DENTAL COLLEGE |
|---|
Principal Investigator |
UCHIDA Yasunari Kyushu Dental College, School of Dentistry, Professor, 歯学部, 教授 (60106268)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
IWASAKI Masaki Shimadzu Corporation, Medical Systems Div., Chief Engineer, 工業計測事業部, 主任
WATANABE Hiroyasu Shimadzu Corporation, Medical Systems Div., Director, 工業計測事業部, 技術部長
MASUMI Shinichi Kyushu Dental College, School of Dentistry, Associate Professor, 歯学部, 講師 (70181659)
AKAGAWA Yasumasa Hiroshima University, School of Dentistry, Professor, 歯学部, 教授 (00127599)
HOSOKAWA Ryuji Hiroshima University, School of Dentistry, Research Associate, 歯学部, 助手 (60211546)
|
|---|
| Project Period (FY) |
1994 – 1996
|
| Keywords | Ultrasound / Computed tomography / TMJ (temporomandibular joint) |
|---|
| Research Abstract |
Recently, the ultrasonography has been tried to apply in a diagnosis of TMJ.However, anatomical interpretation of ultrasonographic image of TMJ region is not easy, so that reading of echogram is extremely difficult. For a solution to this probrem, we have developed the prototype ultrasound computed tomography (US-CT) which accumulated series of TMJ ultrasound image and enabled to recontruct sagittal direction tomographic image. The prototype US-CT consisted of image processing part, ultrasound probe driving part and ultrasound scanner (SDU-400, (SHIMADZU Co.) with 7.5MHz linear electric scanning transducer). In this study, the prototype US-CT was evaluated using a human dry skull with pig articular disc as an ultrasound phantome. The results were as follows, (1) sagittal section images of osseous tissue were visualized, (2) a joint cavity was seen only in a lateral portion of articular head and pig articular disc was recognized as a hyperechoic area, (3) in a medial portion of articular head, the images could not distinguish between condyle head and temporal bone. Because ultrasound didn't arrive at this to the joint inside, it was thought that US-CT can't recognize articular cavity as an image. From an above-mentioned result, possibility of ultrasound sagittal section image construction with this device was suggested at least on temporomandibular joint outside part.
|
