title: Significance of frequency-selective fat saturation T2-weighted MR images for the detection of bone marrow edema in the mandibular condyle.
abstract: The objective of this study was to evaluate the utility of frequency-selective fat saturation (FS) T2-weighted images (T2WI) for the detection of bone marrow edema in the mandibular condyle. MR evidence of bone marrow abnormalities was examined on the set of FS T2WI and conventional T1WI or of conventional T2WI and T1WI in 200 patients with temporomandibular joint (TMJ) related pain. Other parameters studied were TMJ effusion, disk displacement categories, and cortical bone abnormalities. The detection rate and area of bone marrow edema by FS T2WI and T1WI were significantly greater than those assessed by conventional T2WI and T1WI. The correlation between bone marrow abnormalities on FS T2WI and T1WI and pain was significantly stronger than with conventional T2WI and T1WI. This study confirms that FS T2WI is useful for the detection of the "edema pattern" in the mandibular condylar associated with TMJ-related pain.
authors.affiliation: Kyushu Dental College, Dept. of Dental Radiology, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. rad-mori@kyu-dent.ac.jp
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Morimoto
authors.forename: Tatsurou
authors.initials: T
authors.lastname: Tanaka
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Masumi
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tominaga
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Shibuya
authors.forename: Shinji
authors.initials: S
authors.lastname: Kito
authors.forename: Yuka
authors.initials: Y
authors.lastname: Matsufuji
authors.forename: Takeshi
authors.initials: T
authors.lastname: Ohba
mesh_terms: D000293:Adolescent; D000328:Adult; D001855:Bone Marrow Diseases / Q000175:diagnosis*; D004487:Edema / Q000175:diagnosis*; D005157:Facial Pain / Q000175:diagnosis; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D004204:Joint Dislocations / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008335:Mandibular Condyle / Q000473:pathology*; D008875:Middle Aged; D010020:Osteonecrosis / Q000473:pathology; D013582:Synovial Fluid; D019224:Temporomandibular Joint Disc / Q000473:pathology; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis*