| Right-to-Left-Shunt Detected by c-TCD Using the Orbital Window in Comparison with Temporal Bone Windows. | |
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MedLine Citation:
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PMID: 21143546 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: There have been some reports on right-to-left shunt as a cause of cryptogenic stroke. Although contrast transcranial Doppler (c-TCD) can detect RLS, an insufficient temporal window has occasionally restricted its applicability. Thus, we compared the rates of detecting RLS among temporal windows for the middle cerebral arteries (MCAs) and the orbital window for the internal carotid artery (ICA) on c-TCD. METHODS: We used c-TCD to detect RLS in patients with suspected ischemic stroke. We enrolled patients who had both sufficient bilateral temporal windows for MCAs and a right orbital window for ICA and performed c-TCD using all three windows simultaneously. RESULTS: We enrolled 106 consecutive patients and identified microembolic signals (MES) in 30 (28%) of them. Among these 30 patients, 15 had MES from all 3 windows. When these 30 patients were defined as being positive for RLS, the rates of detection were 67%, 73%, and 80% from the right temporal, left temporal, and right orbital windows, respectively (P= .795). CONCLUSION: The right orbital window as well as the temporal window for c-TCD could detect RLS. Insonation from the orbital window should be useful for patients who lack temporal windows. J Neuroimaging 2010;XX:1-5. |
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Authors:
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Kazuto Kobayashi; Kazumi Kimura; Yasuyuki Iguchi; Kenichirou Sakai; Junya Aoki; Takeshi Iwanaga; Kensaku Shibazaki |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2010-12-9 |
Journal Detail:
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Title: Journal of neuroimaging : official journal of the American Society of Neuroimaging Volume: - ISSN: 1552-6569 ISO Abbreviation: - Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9102705 Medline TA: J Neuroimaging Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2010 by the American Society of Neuroimaging. |
Affiliation:
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From the Department of Stroke Medicine, Kawasaki Medical School, Kurashiki, Japan. |
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