✦ LIBER ✦

In vivo validation of image-directed doppler measurement of superior mesenteric artery blood flow

✍ Scribed by Michael Scheurlen; Cornelius Waller; Franz Hartmann

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 749 KB
Volume: 20
Category: Article
ISSN: 0091-2751
DOI: 10.1002/jcu.1870200105

No coin nor oath required. For personal study only.

✦ Synopsis

Image-directed Doppler measurement of superior mesenteric artery blood flow in volunteers was validated in two artificial models with either a venous or an arterial flow profile. In the "venous" model, the Doppler device overestimated the real flow velocity by 86 * 7%, and in the "arterial" model by 24 -+ 9%. The areas under the time-frequency curves (AUCs) from the arterial model were measured by planimetry. A correction factor of 1.47 between flow velocities calculated after planimetry and real flow was established. Correction for this factor resulted in a flow velocity of 19.5 t 4.7 cm/s and a blood flow rate of 377 -+ 166 ml/min in the volunteers.

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