[The use of the "cine-technic" in the MRT diagnosis of the temporomandibular joint].
A new cine-technique in a prospective study using rapid gradient echo sequences was evaluated for the MRT investigation of the temporo-mandibular joint. A newly developed hydraulic apparatus was used to produce progressive opening of the jaw and MRT appearances were recorded during predetermined points of mandibular movement. The investigation included 16 normals and 34 patients. A modified gradient echo sequence was combined with an optimised surface coil or a special double coil and this provided good spatial resolution of the articular disc and of the muscular and bony structure. Amongst the abnormal findings were luxation of the disc (15 cases), tears in the disc (5 cases), late effects of internal derangements (12 cases) and condylar hypermotility (7 cases). The new cine-technique provides specific images in any chosen position of the mandible depending on the clinical disability of the patient.
Vogl
T J
TJ
Radiologische Klinik Innenstadt, Universität München.
Eberhard
D
D
Weigl
P
P
Assal
J
J
Randzio
J
J
D004867:Equipment Design; D005069:Evaluation Studies as Topic; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D009040:Motion Pictures / Q000295:instrumentation; D009055:Mouth / Q000502:physiology; D011446:Prospective Studies; D013704:Temporomandibular Joint / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis / Q000453:epidemiology
Die Anwendung der "Cine-Technik" in der MRT-Diagnostik des Kiefergelenkes.