| Diagnostic benefit of echocontrast enhancement for the insufficient transtemporal bone window. | |
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MedLine Citation:
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PMID: 10208108 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Echocontrast agents (ECA) are known to improve transcranial color-coded duplex (TCCD) imaging, but its diagnostic benefit in the routine clinical setting has not clearly been defined. The authors investigated the diagnostic benefit of ECA application in 54 patients with insufficient transtemporal bone window, consecutively referred to their ultrasound laboratory. According to the precontrast imaging quality, patients were assigned to three categories: A, no intracranial structures or vessel segments visible on B-mode imaging and TCCD (n = 5); and intracranial structures visible on B-mode imaging and vessel segments less than 5 mm in length (B, n = 21), or larger than 5 mm in length (C, n = 28) visible on TCCD. The effect of the echocontrast enhancement was assessed with respect to signal enhancement, imaging quality, and diagnostic confidence. In 49 out of 54 patients (91%), a significant improvement of the imaging quality was noted, enabling 43 (80%) neurovascular diagnoses of sufficient diagnostic confidence. The diagnostic ECA effect was strongly dependent on the precontrast imaging quality: upon echoenhancement, a satisfactory image quality was obtained in none of the patients of category A, as opposed to 16 (76%) and 27 (96%) patients of categories B and C, respectively. In summary, in 80% of our consecutive patient series with insufficient transtemporal bone window, application of ECA allowed for a conclusive TCCD study. Properties of the transtemporal precontrast scans are strongly predictive of the diagnostic benefit and should be taken into the decisive consideration. |
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Authors:
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D G Nabavi; D W Droste; G Schulte-Altedorneburg; V Kemény; M Panzica; S Weber; E B Ringelstein |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of neuroimaging : official journal of the American Society of Neuroimaging Volume: 9 ISSN: 1051-2284 ISO Abbreviation: J Neuroimaging Publication Date: 1999 Apr |
Date Detail:
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Created Date: 1999-05-03 Completed Date: 1999-05-03 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9102705 Medline TA: J Neuroimaging Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 102-7 Citation Subset: IM |
Affiliation:
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Department of Neurology, University of Münster, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Brain / blood supply* Brain Ischemia / ultrasonography Carotid Stenosis / ultrasonography Cerebrovascular Disorders / ultrasonography* Cohort Studies Contrast Media* Female Forecasting Humans Image Enhancement / methods* Male Middle Aged Polysaccharides / diagnostic use Prospective Studies Temporal Bone Ultrasonography, Doppler, Color / methods* Ultrasonography, Doppler, Duplex / methods* Ultrasonography, Doppler, Transcranial / methods* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 0/Polysaccharides; 127279-08-7/SHU 508 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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