title: Sonographic measurement of abdominal aortic diameter: interobserver variability.
abstract: Twenty-eight patients undergoing sonographic evaluation of the abdominal aorta were examined by two separate observers. Three measurements were obtained from each patient: the anteroposterior diameter from an axial image (APA), the right-left diameter from an axial image (RLA), and the anteroposterior diameter from a longitudinal image (APL). Calculation of the interobserver variability gave the following results (in mm): APL, 2.22; APA, 2.53; and RLA, 2.84. The calculated 95% confidence intervals for a single measurement (in mm) were APL, 4.35; APA, 4.94; and RLA, 5.58.
authors.affiliation: Department of Radiology, Massachusetts General Hospital, Boston 02114.
authors.forename: E K
authors.initials: EK
authors.lastname: Yucel
authors.forename: D J
authors.initials: DJ
authors.lastname: Fillmore
authors.forename: T A
authors.initials: TA
authors.lastname: Knox
authors.forename: A C
authors.initials: AC
authors.lastname: Waltman
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001012:Aorta, Abdominal / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D001014:Aortic Aneurysm / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D014463:Ultrasonography