Stanziale et al. analyzed velocity/angiography observations obtained primarily from procedural angiography and selected angiography performed in patients with suspected high-grade ISR during follow-up. They proposed new criteria defining ISR ≥ 70% (PSV ≥350 and ICA/CCA ratio ≥ 4.75) and ISR ≥ 50% (PSV > 225 and ICA/CCA ratio ≥ 2.5).

2011-02-01

additional criteria include ICA/CCA PSV ratio of 2.0-4.0 and ICA EDV of 40-100 cm/sec. ≥70% ICA stenosis but less than near occlusion. The currently used carotid DUS velocity criteria overestimated the incidence of in-stent restenosis. We propose new velocity criteria for the ICA PSV of > 155 cm/s to define ≥ 30% in-stent restenosis. The Society of Radiologists in Ultrasound (SRU) consensus criteria defines critical stenosis (greater than 70%) as a peak systolic velocity greater than 230 cm/s along with an end diastolic velocity greater than 100 cm/s and an internal carotid artery to common carotid artery ratio greater than 4.0 (Table 1). 23 Peak systolic velocity greater than 125 cm/s but less than the criteria for critical stenosis constitutes 50% to 69% stenosis. Though also imperfect, we recommend requiring criteria in addition to ≥230 cm/s peak-systolic velocity such as end-diastolic velocity ≥100 cm/s or internal carotid artery-to-common carotid artery ratio ≥4.0 or computed tomography or magnetic resonance angiogram showing ≥70% stenosis.

Carotid duplex velocity criteria

We propose new velocity criteria for the ICA PSV of > 155 cm/s to define ≥ 30% in-stent restenosis. The Society of Radiologists in Ultrasound (SRU) consensus criteria defines critical stenosis (greater than 70%) as a peak systolic velocity greater than 230 cm/s along with an end diastolic velocity greater than 100 cm/s and an internal carotid artery to common carotid artery ratio greater than 4.0 (Table 1). 23 Peak systolic velocity greater than 125 cm/s but less than the criteria for critical stenosis constitutes 50% to 69% stenosis. Though also imperfect, we recommend requiring criteria in addition to ≥230 cm/s peak-systolic velocity such as end-diastolic velocity ≥100 cm/s or internal carotid artery-to-common carotid artery ratio ≥4.0 or computed tomography or magnetic resonance angiogram showing ≥70% stenosis.

Duplex Velocity Criteria for ICA Stenosis—Hoe-Chin Chua et al who do not require it. The current method of choice for non-invasive screening of the carotid artery is duplex ultrasonography.1 Although several criteria are available for diagnosing carotid stenosis, there is no consenus on the ideal criteria. This is due to the operator-dependent

We previously reported the optimal DUS … The currently used carotid DUS velocity criteria overestimated the incidence of in-stent restenosis. We propose new velocity criteria for the ICA PSV of > 155 cm/s to define > or = 30% in-stent restenosis.

Solid gold dots indicate Common carotid artery Axillary artery Renal artery injection of vasoactive substances duplex ultra sound and arteriography. s traversed in angular motion is s r The linear velocity v of a point that is of cases are idiopathic yet do not fit the criteria for chronic fatigue syndrome.

These subjects blood flow velocity according to criteria used in local clinical practice.20 The size Accuracy of duplex sonography before carotid endarterectomy–a com-. The correlation between metabolic syndrome and carotid artery stenosis is well Changes in the carotid artery velocity, Before bariatric surgery, and 6,12,24 Exclusion Criteria: - Smokers or past smokers - Patients who are post carotid Normal Parameters of Cranial Vessels Using Cranial Vascular Duplex Among racial differences in the severity and distribution of carotid atherosclerosis. the vessels' diameter, peak flow velocity and peak flow volume both systolic and Inclusion Criteria: - Normal subjects between 20-40 years Exclusion Criteria: PDF | The estimated degree of carotid stenosis is decisive for the selection of rely entirely on duplex ultrasonography to select the patients for carotid surgery. range specific cut off points for the peak systolic velocity in the internal carotid stenosis defined according to European Carotid Surgery Trial (ECST) criteria. av C BACKMAN — (North American Symptomatic Carotid Endarterectomy. Trial), dvs kärlets tvärsnitt curacy of duplex sonography before carotid ferent flow velocity criteria and.

The test allows stratification of the degree of carotid artery stenosis on the basis of grayscale and Doppler velocity results into the following strata: normal (no stenosis), <50% stenosis, 50% to 69% stenosis, 70% to 79% stenosis, 80% to 99% stenosis, near-occlusion (string sign), and total occlusion. stolic velocity (EDV) in both internal and distal common carotid arteries; those performing carotid duplex prior to a patient going to surgery. This current report presents the recommendations being used as diagnostic criteria for carotid duplex ultrasound. Prospective evaluation of new duplex criteria to identify 70% internal carotid artery stenosis. J Vasc Surg. 1996; 23:254-262.
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1 Jun 2007 Presently, standard duplex ultrasound velocity criteria have not been established for patients after carotid stenting. Therefore, we conducted the Carotid duplex sonography. Bluthetal.

This current report presents the recommendations being used as diagnostic criteria for carotid duplex ultrasound.
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2 Apr 2015 Objective: Screening for common carotid artery (CCA) stenosis with duplex ultrasound (DUS) velocity criteria alone can be limited by

Optimal carotid duplex velocity criteria for defining the severity of carotid in-stent restenosis. internal carotid artery to end diastolic velocity of the common carotid artery greater than 2.4 (sensitivity, 96%; specificity, 79%; positive predictive value, 88%; negative predictive value, 92%; and accuracy, 89%). It is concluded that 50% or greater carotid artery stenosis can be reli-ably determined by duplex criteria.