[MR imaging of temporomandibular joint (TMJ): mandibular fracture and traumatic disk injury].
Using an 1.5 Tesla superconducting MR unit and surface coil, 12 mandibular fracture patients were evaluated for TMJ disk change. Sagittal and coronal images of the TMJ with a slice thickness of 2mm were obtained with FISP 2D or 3D. TR = 30 msec, TE = 12 msec, and flip angle = 40 degrees were applied. Among 12 patients, FISP 3D revealed increased signal intensity of the disk in 70% of cases. Traumatic fluid collection at or adjacent to the TMJ showed high intensity. The disk was displaced anteromedially regardless of the site of fracture.
Watabe
T
T
Department of Radiology, Saitama Medical School.
Adachi
M
M
Watabe
T
T
Heshiki
A
A
Mizuno
H
H
Mizuno
H
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008337:Mandibular Fractures / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D013704:Temporomandibular Joint / Q000293:injuries*