title: Sonographic findings in muscle strain injury: clinical and MR imaging correlation.
abstract: Both sonography and magnetic resonance imaging were performed in 57 patients with clinically suspected strain injury in lower extremity muscles. Sonography demonstrated normal findings in nine patients (16%), hyperechoic infiltration in 31 patients (54%), mass in nine patients (16%), and compound lesions of infiltration and mass in eight patients (14%). Clinically grade 2 lesions ranged from small infiltration to large compound lesions on both sonography and magnetic resonance imaging. Hyperechoic infiltration was not demonstrated on T1-weighted magnetic resonance images and with less than 50% cross-sectional muscle involvement. The mass and compound lesions were ascertained to be moderate or severe injury because the masses of the lesions had obvious hemorrhage or hematoma on magnetic resonance images.
authors.affiliation: Department of Radiology, Yokohama City Kowan Hospital, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Takebayashi
authors.forename: H
authors.initials: H
authors.lastname: Takasawa
authors.forename: Y
authors.initials: Y
authors.lastname: Banzai
authors.forename: H
authors.initials: H
authors.lastname: Miki
authors.forename: R
authors.initials: R
authors.lastname: Sasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Itoh
authors.forename: S
authors.initials: S
authors.lastname: Matsubara
mesh_terms: D000293:Adolescent; D000328:Adult; D001265:Athletic Injuries / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D005069:Evaluation Studies as Topic; D005122:Exudates and Transudates; D005260:Female; D005500:Follow-Up Studies; D006406:Hematoma / Q000175:diagnosis / Q000000981:diagnostic imaging; D006470:Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D007869:Leg Injuries / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D008297:Male; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging / Q000293:injuries*; D009135:Muscular Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D012421:Rupture; D016037:Single-Blind Method; D013180:Sprains and Strains / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D013708:Tendon Injuries / Q000175:diagnosis / Q000000981:diagnostic imaging; D014463:Ultrasonography; D014945:Wound Healing