Volume Flow Estimation by Colour Duplex
نویسندگان
چکیده
منابع مشابه
Estimation of total hepatic blood flow by duplex ultrasound.
The volume flow rate of blood in the portal vein and the hepatic artery was measured using a duplex ultrasound system. Two sections of the hepatic artery were studied; the common hepatic artery where measurements were made just after the bifurcation of the coeliac axis to splenic and hepatic arteries and the hepatic artery itself, where measurements were made just proximal to the porta hepatis ...
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BACKGROUND AND PURPOSE Vertebrobasilar ischemia has been attributed to a reduction of net vertebral artery flow volume, the product of mean flow velocity and the cross-sectional area of the vessel. It can be determined by duplex sonography. There are no reference values for vertebral artery flow volume in an age group representative of patients with cerebrovascular disease. METHODS We examine...
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The addition of colour information to the computation of range/scene flow is proposed to improve its accuracy and robustness to ambiguities. This is applied in the form of additional optical flow constraints from aligned colour image data. Combining constraints gives improved velocity displacement fields for both synthetic and real datasets over using depth alone, or in using depth plus intensi...
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BACKGROUND AND PURPOSE The aim of this study is to elucidate the effect of orthostatic hypotension on changes in cerebral blood flow. METHODS Blood flow velocities of both the common carotid artery and vertebral artery were measured using duplex ultrasonography in 12 patients: 6 with familial amyloidotic polyneuropathy, 3 with Shy-Drager syndrome, 2 with pandysautonomia, and 1 with senile ort...
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ژورنال
عنوان ژورنال: European Journal of Vascular and Endovascular Surgery
سال: 1999
ISSN: 1078-5884
DOI: 10.1053/ejvs.1998.0741