Digital Subtraction Angiography for Hemodynamic Evaluation of Cerebrovascular Reconstructive Surgery

[Digital subtraction angiography for hemodynamic evaluation of cerebrovascular reconstructive surgery].

From May, 1982 to May, 1983, 300 consecutive patients were examined by intravenous digital subtraction angiography (DSA) using the Philips DVI system, which had a 512 X 512 matrix for video-imaging. Of those patients, 160 were diagnosed as having ischemic cerebrovascular disease. Attention was focused on 17 cases who were treated by a extracranial-intracranial (EC-IC) bypass and 5 cases treated...

Progress in Cerebrovascular Disease Digital Subtraction Angiography in Cerebrovascular Disease

THE INTRAVENOUS INJECTION of contrast medi­ um for the visualization of vascular structures was introduced 43 years ago by Robb and Steinberg. This technique never gained widespread popularity because of the technical problems in obtaining consistent im­ ages of good quality. Also, the amount of contrast medium that had to be injected to achieve adequate visualization of large arteries was subs...

MR Digital Subtraction Angiography

Analysis of Subtraction Methods in 3D Contrast-Enhanced MR Digital Subtraction Angiography Yuexi Huang Master of Science 2001 Department of Medical Biophysics University of Toronto 3D Contrast-enhanced MR angiography is promising as a replacement to catheter-based x-ray angiography due to its non-invasive nature. However, the image quality of MR angiography is still inferior to that of x-ray an...

Digital subtraction angiography.

Impact of digital subtraction angiography on carotid evaluation.

Impact of digital subtraction angiography by intravenous injection (DSAV) was examined in a private neurology clinic. In the evaluation of threatened stroke, advent of DSAV was associated with reduced use of both traditional noninvasive tests (from 100% of patients to 36%), and conventional arteriograms (from 29% to 4%). Less compelling indications were often prescreened with noninvasive tests;...