title: Pulsed Doppler flow as a criterion of portal venous velocity: comparison with cineangiographic measurements.
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.forename: K
authors.initials: K
authors.lastname: Ohnishi
authors.forename: M
authors.initials: M
authors.lastname: Saito
authors.forename: H
authors.initials: H
authors.lastname: Koen
authors.forename: T
authors.initials: T
authors.lastname: Nakayama
authors.forename: F
authors.initials: F
authors.lastname: Nomura
authors.forename: K
authors.initials: K
authors.lastname: Okuda
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D002932:Cineangiography; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000503:physiopathology; D007459:Iodized Oil; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000502:physiology*; D011899:Ranitidine; D014463:Ultrasonography; D014667:Vasopressins
chemical_list: D014667:Vasopressins; D007459:Iodized Oil; D011899:Ranitidine