Cine-MR for the temporomandibular joints.

• Project/Area Number: 17591968
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Pathobiological dentistry/Dental radiology
• Research Institution: Nagasaki University
• Principal Investigator: YAMADA Toshiro Nagasaki University, Hospital of Medical and Dentistry, Radiological Technologist, 医学部・歯学部附属病院, 診療放射線技師 (90380930)
• Co-Investigator(Kenkyū-buntansha): KITARORI Hideki Nagasaki University, Hospital of Medical and Dentistry, Radiological Technologist, 医学部・歯学部附属病院, 診療放射線技師 (60380929) ; TAGAWA Kazuo Nagasaki University, Hospital of Medical and Dentistry, Radiological Technologist, 医学部・歯学部附属病院, 診療放射線技師 (00380931) ; KIMURA Yasuo Nagasaki University, Graduate School of Biomedical Sciences, instructor, 大学院医歯薬学総合研究科, 助手 (30253686) ; NAKAMURA Takashi Nagasaki University, Graduate School of Biomedical Sciences, Professor, 大学院医歯薬学総合研究科, 教授 (30172406) ; 米津 康一 長崎大学, 大学院・医歯薬学総合研究科, 助教授 (70167039)
• Project Period (FY): 2005 – 2006
• Project Status: Completed (Fiscal Year 2006)
• Budget Amount: ¥3,500,000 (Direct Cost: ¥3,500,000); Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000); Fiscal Year 2005: ¥2,100,000 (Direct Cost: ¥2,100,000)
• Keywords: MR / temporomandibular arthrosis / Balanced-FFE / Balanced-FFE / MR顎関節動態検査法 / MRI高速撮像法

Research Abstract

MR inspection to temporomandibular arthrosis is effective, joint discs depict a soft tissue and a condylar head, mandibular fossa and a form and position relations of the bone which went. Inspection images an opening and two positions of embarrassment and evaluates exercise of a temporomandibular joint. It arrives at the place where I should be almost satisfied with about static temporomandibular joint MR inspection, but is insufficient to diagnose movement of a temporomandibular joint. Balanced-FFE that consecutive imaging was possible sequences was developed for a short time and was able to get the image that the S/N ratio was high in spite of being image for a short time recently. Therefore, a purpose of this study applies Balanced-FFE which is a new MR sequence and establishes Cine-MR for the temporomandibular joints and acquires a cine image of a temporomandibular joint and is to evaluate it. Therefore I evaluated quantity of movement and an angle of rotation degree of a condylar head. As for the result, the relations that were close to a symptom and quantity of movement, angle of rotation degree were not watched. However, I was campaigning against an opening so that a symptom became terrible, and the tendency that changed of unstable angle of rotation degree was seen. It seems that this will become an effective method to evaluate a symptom of temporomandibular arthrosis in future.