Ultrasound Velocity Criteria for Vertebral Origin Stenosis

Koch, Sebastian; Romano, José G.; Park, Hannah; Amir, Murtaza; Forteza, Alejandro M.

doi:10.1111/j.1552-6569.2008.00286.x

Cited by 31 publications

(18 citation statements)

References 12 publications

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“…The authors explained that this may be due to limitations of ultrasonographic methods in their centers (13). Other studies compared the accuracy of DUS and DSA as a reference, regarding hemodynamic parameters, especially on blood flow velocities (7,(15)(16)(17). In another study by Koda et al (7), the significant correlation value of 0.823 was found between CTA and DSA in vertebral artery stenosis diagnosis.…”

Section: Discussionmentioning

confidence: 84%

“…In addition, we found a significant correlation (0.812) between Doppler sonography and DSA, too, indicating that DUS can be an alternative noninvasive method for evaluating carotid stenoses > 50%. The reason for obtaining this powerful correlation between Doppler sonography and DSA, when compared to other investigations (7,10,14,16,17), may be that we used hemodynamic parameters that were most appropriate regarding previous studies to find reliable hemodynamic parameters in the evaluation of artery stenosis.…”

Section: Discussionmentioning

confidence: 99%

“…Previous ultrasound studies (7,(15)(16)(17) proved that the stenotic PSV and/or PSVr is superior to end-diastolic velocity and other hemodynamic parameters. The degree of the carotid artery stenosis measured on CTA was taken as the reference parameter.…”

Section: Statisticsmentioning

confidence: 99%

“…The peak systolic velocity was evaluated (PSV1) for each patient and the ratio of the stenotic to the post stenotic peak systolic velocity was calculated (PSVr = PSV1/PSV2). These parameters were appropriate indicators of stenosis based on previous studies (7,(15)(16)(17).…”

Section: Statisticsmentioning

confidence: 99%

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The Comparison between Digital Subtraction Angiography, CT Angiography, and Doppler Ultrasonography in Evaluation and Assessment of Carotid Artery Stenosis

Banaei

2017

Ann Mil Health Sci Res

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Background: Common angiography or digital subtraction angiography (DSA) is the gold standard protocol for diagnosis of carotid artery stenosis. However, this method has very high delivered X-ray doses to patient and personnel as an invasive diagnostic protocol. The progress of noninvasive or minimally invasive diagnostic techniques like Doppler ultrasonography (DUS), CT angiography (CTA), and MR angiography (MRA) has improved the detection and evaluation of stenosis lesions. The aim of this study was to evaluate the usefulness and accuracy of non-invasive DUS and CTA, attempting in this way to restrict DSA only for final proof of high-grade stenosis. Methods: 25 male patients with carotid artery stenosis were examined with CTA, DUS, and DSA. The lumen diameter of carotid artery was measured and compared with CTA and DUS. The results of CTA and DUS were compared and correlated with DSA results as a reference. Results: Data of lumen diameter measurements in ultrasonography and CTA (for internal and common carotid artery) showed no significant differences between the two methods. Mean internal/common lumen artery in stenosis region was 3.745/5.114 and

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Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Statisticsmentioning

confidence: 99%

Section: Statisticsmentioning

confidence: 99%

See 2 more Smart Citations

The Comparison between Digital Subtraction Angiography, CT Angiography, and Doppler Ultrasonography in Evaluation and Assessment of Carotid Artery Stenosis

Banaei

2017

Ann Mil Health Sci Res

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“…Doppler samples were taken and Peak Systolic Velocity (PSV) was recorded. Criteria used for grading ≥50% stenosis were focal elevated blood flow velocity with a PSV cut-off point at the V1 segment of the vertebral artery of 140 cm/s and 125 cm/s at the V2 segment (Ackerstaff et al, 1984(Ackerstaff et al, , 1988Hua et al, 2009;Koch, Romano, Park, Amir, & Forteza, 2009). …”

Section: Duplex Ultrasonographymentioning

confidence: 99%

Duplex ultrasonography for the detection of vertebral artery stenosis

et al. 2017

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Objectives: Vertebrobasilar stenosis is frequent in patients with posterior circulation stroke and it increases risk of recurrence. We investigated feasibility of duplex ultrasonography (DUS) for screening for extracranial vertebral artery stenosis and compared it with CT angiography (CTA). Materials and Methods:We gathered data on 337 consecutive patients who had DUS because of posterior circulation stroke or TIA. Matching CTA studies were retrieved and used as reference. Stenosis on CTA was considered "significant" if >50%, at DUS if Peak Systolic Velocity (PSV) > 140 cm/s for the V1 segment and PSV > 125 cm/s for the V2 segment. We determined the area under the ROC curve (AUROC). In addition, we calculated which PSV cut-off value resulted in highest sensitivity with acceptable specificity.Results: DUS was able to make an adequate measurement in 378 of 674 V1 segments and 673 of 674 V2 segments. DUS detected a significant stenosis in 52 of 378 V1 segments; 12 were confirmed by CTA (AUROC 0.73, 95% Confidence Interval 0.63-0.83).The optimal DUS PSV cut-off value for this segment was 90 cm/s. For the V2 segment there were too few stenoses to allow reliable assessment of diagnostic characteristics of DUS. Conclusions:Although DUS has a fair AUROC for detecting significant stenosis, adequate assessment of the V1 segment is often not possible due to anatomic difficulties.Assessment of the V2 segment is feasible but yielded few stenoses. Hence, we consider usefulness of DUS for screening of extracranial vertebral artery stenosis limited. K E Y W O R D SCT angiography, duplex ultrasonography, vertebral artery, vertebrobasilar stroke

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