Three dimensional diagnostic system of the jaw morphology in patients with jaw deformity without ionizing radiation by using high resolution MRI.
Grant-in-Aid for Scientific Research (C)
|Allocation Type||Single-year Grants|
|Research Institution||Kyushu University|
K.GOTO Tazuko Kyushu University, Faculty of Dental Science, Assis.Prof., 大学院・歯学研究院, 助手 (60294956)
TAKIZAWA Osamu Siemens-Asahi Maedical Technologies Ltd., Chief Scientist, 研究部, 研究部長
YOSHIURA Kazunori Kyushu University, Faculty of Dental Science, Assis.Prof., 大学院・歯学研究院, 助教授 (20210643)
TOKUMORI Kenji Kyushu University, Faculty of Dental Science, Assis.Prof., 大学院・歯学研究院, 助手 (40253463)
TANAKA Takemasa Kyushu University Hospital, Assis.Prof., 大学病院, 助手 (30163538)
HAYASHI Hideaki Asahi Kasei Information System Co., Ltd., Scientist, 研究開発部, 研究課長
堀之内 康文 九州大学, 歯学部附属病院, 助手 (80219229)
|Project Period (FY)
2002 – 2003
Completed(Fiscal Year 2003)
|Budget Amount *help
¥3,000,000 (Direct Cost : ¥3,000,000)
Fiscal Year 2003 : ¥1,000,000 (Direct Cost : ¥1,000,000)
Fiscal Year 2002 : ¥2,000,000 (Direct Cost : ¥2,000,000)
|Keywords||MRI / jaw morphology / Three dimensional diagnosis / without ionizina radiation / Jaw deformity / 無被爆|
We accumulate MR data and made the table of data from the patients.
We mainly developed the three-dimensional measurement system of jaw morphology.
We performed MR examination of two volunteers. We investigated that the most suitable sequence that can show the cortex of the mandible and mandibular canal. Next, we tried to decide the most suitable threshold to reconstruct the three-dimensional images of the jaw. In addition, we discussed the best three-dimensional images 'for the diagnosis in clinic. However, it was difficult to extract the cortex automatically and we had to perform it by manual. We have to continue to investigate whether it will be able to perform automatically or not.
We calculated the length, thickness, and the amount of the movement of the bone fragment at the orthognathic surgery.
It is now possible to measure the distance on the three dimensional images of the jaw.
We investigate the measurement errors by using the custom made phantom and the original made phantoms.
We further synthesized the system for the soft tissue and bone. We will try to make the system simple and faster one, and try to use it in the clinic.
Research Products (3results)