Abstract |
An ultrasonic sector scanner and pulsed Doppler flowmeter were combined to measure portal venous velocity in 19 patients with portal hypertension and compared with cineangiographic mapping of a droplet of oil released into the portal vein. In 12 patients, measurements were made before and after pitressin [7] or ranitidine [5]. With the Doppler method, maximum basal portal venous velocity was 17.0 +/- 3.9 cm/sec., while average cineangiographic velocity was 8.5 +/- 2.7 cm/sec., a significant difference (p less than 0.001). After pitressin, velocity decreased to 8.3 +/- 2.7 cm/sec. with the Doppler method and 3.6 +/- 1.0 cm/sec. with cineangiography. Ranitidine did not produce an appreciable change. Doppler and cineangiographic velocity measurements exhibited significant correlation over a wide range of values (r = 0.960). Thus the pulsed Doppler method may give accurate values of portal venous velocity if they are corrected to cineangiographic values. Flow can be calculated from velocity and the cross-sectional area of the portal vein as measured on the sonogram. The Doppler method is simple and noninvasive and is particularly useful in studying changes in portal hemodynamics.
|
Authors | K Ohnishi, M Saito, H Koen, T Nakayama, F Nomura, K Okuda |
Journal | Radiology
(Radiology)
Vol. 154
Issue 2
Pg. 495-8
(Feb 1985)
ISSN: 0033-8419 [Print] United States |
PMID | 2981425
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
|
Chemical References |
- Vasopressins
- Iodized Oil
- Ranitidine
|
Topics |
- Adult
- Blood Flow Velocity
- Cineangiography
- Female
- Humans
- Hypertension, Portal
(physiopathology)
- Iodized Oil
- Male
- Middle Aged
- Portal Vein
(diagnostic imaging, physiology)
- Ranitidine
- Ultrasonography
- Vasopressins
|