Severe aortic stenosis (AS) results in a parvus‐et‐tardus pattern on spectral Doppler waveforms; however, the impact of severe AS on CDU velocities is unclear. The purpose of this study was to assess the impact of severe AS on CDU velocities by evaluating changes in CDU velocities before ...
To assess the possibility that this test might confuse the interpretation of velocities obtained during routine carotid duplex studies, we measured transcranial and carotid velocities at multiple sites in four normal subjects at baseline and 10 and 30 min after injection of acetazolamide. Velocity ...
Blood flow velocities were monitored with transcranial Doppler ultrasound and carotid stump pressures were measured at the time of common carotid artery cross-... MP Spencer,GI Thomas,MA Moehring - Stroke; a journal of cerebral circulation 被引量: 140发表: 1992年 Endovascular treatment of carotid ...
Supraorbital Doppler examination, oculoplethysmography-Kartchner, carotid phonoangiography and, later in this series, spectral analysis of the carotid Doppler velocities were performed after 193 endarterectomies. One hundred fifty-eight patients were initially tested within 3 months of operation, and 35 ...
Orbital and facial vasculature, with its dynamic changes and flow velocities seen in orbital varices, carotid-cavernous fistulas, and dural cavernous ... D Potter,Patrick - 《Current Opinion in Ophthalmology》 被引量: 24发表: 2001年 Classification and Management of Skull Base Fractures In this art...
The Relationship of Coronary Artery Disease and Carotid Doppler Flow Velocity and Resistance Index in Patients with no Significant Carotid Stenosis. Investigates the probable relationship between carotid artery flow velocities, namely, systolic, diastolic flow velocity and resistance index and coronary ......
Carotid US consists of gray scale imaging to assess location and extent of plaque and Doppler to measure flow velocities and degree of stenosis. From:Textbook of Clinical Neurology (Third Edition),2007 Discover other topics Chapters and Articles ...
Placing a stent in the carotid artery alters its biomechanical properties and renders it less complaint. This in turn leads to elevations in velocities that do not necessarily reflect a stenosis. If the thresholds to define normal arteries are revised upward, then duplex ultrasonography has been ...
Output tangential velocities are (\({v}_{t1}\)) and (\({v}_{t2}\)), the instantaneous velocity of the particle hitting the surface is (\({{\varvec{v}}}_{c}\)), and the normal velocity is (\({{\varvec{v}}}_{N}\)). The angle \((\varnothing )\) interval is chosen ...
The patients with unilateral stenosis underwent the comparison with the vascular system of the other side. Againts our expectations, no increase in flow velocities in the internal carotid artery (ACI) of the other side as an expression of collateral blood supply was detected. 展开 ...