Journal of Ultrasound in Medicine, Vol 10, Issue 12 681-683, Copyright © 1991 by American Institute of Ultrasound in Medicine
Sonographic measurement of abdominal aortic diameter: interobserver variability
E. K. Yucel, D. J. Fillmore, T. A. Knox and A. C. Waltman
Department of Radiology, Massachusetts General Hospital, Boston 02114.
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.