Quantitative Magnetic Resonance Angiography in the Evaluation of the Subclavian Steal Syndrome: Report of 5 Patients

Authors: Bauer, Andrew M.; Amin-Hanjani, Sepideh; Alaraj, Ali; Charbel, Fady T.

Source: Journal of Neuroimaging, Volume 19, Number 3, July 2009 , pp. 250-252(3)

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Abstract:

BACKGROUND AND PURPOSE

The indications for surgical or endovascular treatment of patients with subclavian stenosis (SS) or occlusion remain controversial. Multiple studies have shown that in most patients, SS results in steal that is evident radiographically, but requires no treatment. METHODS

This report describes 5 cases of SS, analyzed with phase contrast quantitative MRA (QMRA). QMRA provides quantitative blood flow data previously unavailable. A quantitative ischemic forearm challenge is also introduced using the QMRA technique. RESULTS

A basilar flow index, basilar artery (BA) flow as a percentage of total intracranial flow was defined. This varied from 12.6% to 20.4%. All patients in this report had VA flow reversal. None had BA flow reversal CONCLUSION

This report features novel methods using QMRA to identify ischemic patterns in the BA indicative of significant subclavian steal syndrome (SSS) in patients with SS.

J Neuroimaging 2009;19:250-252.

Keywords: Quantitative magnetic resonance angiography; subclavian steal syndrome; vertebrobasilar insufficiency

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1552-6569.2008.00297.x

Affiliations: 1: Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL.[Correction added after online publication 10-June-2009: Received date has been corrected.]

Publication date: 2009-07-01