Innominate artery occlusive disease: sonographic findings.

Innominate artery occlusive disease: sonographic findings. Research Abstract Details 

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Innominate artery occlusive disease: sonographic findings. Abstract Text:

Edward G Grant,Suzie M El-Saden,Beatrice L Madrazo,J Dennis Baker,Mark A Kliewer,

OBJECTIVE: The objective of this study was to report the sonographic abnormalities in a group of patients with angiographically proven innominate artery stenosis and occlusion. MATERIALS AND METHODS: A review of all cerebrovascular sonograms at our institutions was undertaken to identify patients with complete or partial flow reversal in the right vertebral artery and reversal or midsystolic deceleration of flow in any one of the three major segments of the right carotid system (common, internal, or external carotid artery). The distribution and appearance of these abnormalities was evaluated, and the presence or absence of tardus-parvus waveforms was noted in any segment of the right carotid artery. Additionally, a left to right common carotid peak systolic velocity ratio (LCCA/RCCA) was calculated and compared to published normal values. All patients had correlative contrast or MR angiography. Correlation was made between the severity of stenosis as determined by angiographic images and waveform aberrations as well as the more objective LCCA/RCCA ratios. RESULTS: Twelve patients were identified as having the abnormalities described above in the right vertebral and carotid arteries. Doppler waveforms from the right vertebral artery revealed that eight of the 12 patients had complete reversal of flow at rest. Bidirectional flow was found in the remaining four as manifested by the presence of marked midsystolic deceleration. In the carotid arteries, one patient had complete reversal of flow in all segments of the right carotid system. Waveforms with midsystolic deceleration were identified in at least one of the carotid arteries of the remaining 11 patients: common carotid artery (8/11 = 73%), internal carotid artery (10/11 = 91%), external carotid artery (3/11 = 27%). The average LCCA/RCCA was 3.1 with a range of 1.7 to 5.7 (normal = 0.7-1.3). All patients had severe innominate artery disease (from 70% to occlusion) by contrast angiography or MR angiography. There was no correlation between the angiographically determined degree of stenosis and the Doppler findings. CONCLUSION: A distinctive pattern of hemodynamic alterations occurs in the right vertebral and carotid arteries of patients with severe innominate artery disease. Findings include reversed or bidirectional flow in the right vertebral artery, the presence of midsystolic deceleration in any of the branches of the right carotid system, and elevated LCCA/RCCA ratio.

Innominate artery occlusive disease: sonographic findings. Publishing Authors By Initials

EG Grant,SM El-Saden,BL Madrazo,JD Baker,MA Kliewer,

For similar diagnosis: diagnostic techniques and procedures: diagnostic imaging: ultrasonography: ultrasonography, doppler: ultrasonography, doppler, duplex research abstracts see: diagnosis: diagnostic techniques and procedures: diagnostic imaging: ultrasonography: ultrasonography, doppler: ultrasonography, doppler, duplex research

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Innominate artery occlusive disease: sonographic findings. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 186

Page Numbers: 394-400

Journal Abbreviation:

ISSN: 0361-803X

DAY: 15

MONTH: Feb

YEAR: 2006

Innominate artery occlusive disease: sonographic findings. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7708173

Innominate artery occlusive disease: sonographic findings. Keywords Mesh Terms:

KEYWORDS: Ultrasonography, Doppler, Duplex

MESH TERMS: ultrasonography

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Grant and Affiliation Information for Innominate artery occlusive disease: sonographic findings.

AFFILIATION: Department of Radiology, University of Southern California Keck School of Medicine, University Hospital, 1500 San Pablo St., Los Angeles, CA 90033, USA.

Country: United States

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MEDLINETA: AJR Am J Roentgenol

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