Journal of Ultrasound in Medicine, Vol 14, Issue 6 435-439, Copyright © 1995 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Doppler sonography of the inferior mesenteric artery: a preliminary study

A. L. Denys, M. Lafortune, B. Aubin, M. Burke and G. Breton
Department of Radiology, Hopital Saint-Luc, Montreal, Quebec, Canada.

The purposes of this study were to look for the inferior mesenteric artery in patients undergoing abdominal sonography, to determine in what percentage of patients it is visible, and to characterize Doppler flow patterns of the inferior mesenteric artery in fasting patients without intestinal vascular disease. The inferior mesenteric artery was sought in 100 consecutive fasting adults (mean age, 54 years; 63 women, 37 men), as follows: the infrarenal aorta was scanned in a transverse plane; the origin of the inferior mesenteric artery was identified on the left anterolateral surface of the aorta; the inferior mesenteric artery was then traced caudally along the left side of the aorta. The inferior mesenteric artery and the superior mesenteric artery were studied with Doppler sonography in 50 different subjects without clinical or Doppler sonographic evidence of abdominal vascular disease (mean age, 44.9 years; 17 men, 33 women). Pulsed Doppler samples were taken within the inferior mesenteric artery in sagittal planes. The resistive index was calculated from the superior mesenteric artery and the inferior mesenteric artery. The inferior mesenteric artery was detected in all but eight patients (92%). In seven patients obesity prevented visualization. The eighth patient had undergone abdominal surgery on the previous day, limiting the sonographic examination. The diastolic flow in the inferior mesenteric artery was less than that in the superior mesenteric artery in all patients. The resistive index was 0.959 +/- 0.045 in the inferior mesenteric artery and 0.856 +/- 0.046 in the superior mesenteric artery (P < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

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