BACKGROUND AND PURPOSE Color duplex ultrasonography (CDU) is a standard method of noninvasive evaluation of internal carotid artery stenosis (ICAS). B-flow imaging (BFI), on the other hand, is a newer method. We investigated the accuracy of the two noninvasive tests--CDU and BFI--each separately and as a combination of the two tests by comparing with digital subtraction angiography as a referen...

BACKGROUND Renal arteriovenous malformation is an aberrant vascular connection between the renal artery and vein. Acquired renal arteriovenous malformation (arteriovenous fistulae) accounts for approximately 70% of renal arteriovenous abnormalities. Congenital renal arteriovenous malformation, relatively rare, can result in significant hematuria which may require arterial embolization or nephre...

OBJECTIVE Color and duplex Doppler ultrasound and digital subtraction angiography were compared for the evaluation of graft patency of the gastroepiploic artery (GEA). METHODS In 77 observations, ultrasound and digital subtraction angiography were compared. The coronary resistance index (cRI) was defined as the maximal systolic flow velocity minus the maximal diastolic flow velocity, divided ...

Videodensitometric analysis of digital subtraction coronary arteriography, a new approach for calculating contrast disappearance half-life (T1/2), was assessed in determining regional myocardial blood flow quantitatively. Forty-one patients with coronary artery disease and 12 with angiographically normal coronary arteries underwent digital subtraction coronary arteriography by manual injection ...

919 Scientific abstract: Chronic pain Utility of Digital Subtraction Angiography in Cervical Transforaminal Epidural Steroid Injections: Does Digital Subtraction Improve Safety Over Live Fluoroscopy? Andrew Rubens, Carlos A. Pino, Clarence Ivie The University of Vermont Medical Center Introduction Cervical transforaminal epidural steroid injections (CTFESI) have been used for many years in the ...