| Evaluation of arteriovenous malformations (AVMs) with transcranial color-coded duplex sonography: does the location of an AVM influence its sonographic detection? | |
| | |
MedLine Citation:
|
PMID: 16239654 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: The clinical value of transcranial color-coded duplex sonography (TCCS) in the evaluation of arteriovenous malformations (AVMs) has not yet been fully investigated. In this study, 54 intracranial AVMs confirmed by angiography were prospectively examined over 6 years. The purpose of the study was to describe their typical sonographic features and to define sensitivity for diagnosis with regard to the location of an AVM. METHODS: Transcranial color-coded duplex sonographic findings for 54 patients with intracranial AVMs are presented. The vessels of the circle of Willis were identified by location, course, and direction of flow on color flow images. RESULTS: In accordance with digital subtraction angiography, the intracranial AVMs could be visualized in 42 cases (sensitivity, 77.8%). The pathologic vessels were coded in different shades of blue and red, corresponding to varying blood flow directions in the AVM. The major feeding vessels could be easily identified. Hemodynamic parameters showing increased systolic and diastolic flow velocities and a decreased pulsatility index were better attainable with TCCS than with conventional transcranial Doppler sonography. Arteriovenus malformations located near the cortex, that is, in the parietal, frontal, occipital, and cerebellar regions of the brain, could not be visualized. In contrast, AVMs located in the basal regions were very easy to image (sensitivity, 88.9%). Additionally, TCCS proved useful for follow-up examinations postoperatively or after embolization. CONCLUSIONS: Transcranial color-coded duplex sonography is a valuable noninvasive method for the diagnosis and long-term follow-up of intracranial AVMs. Arteriovenous malformations located in the axial imaging plane can be more easily detected. Nevertheless, TCCS should not be used as a screening method. |
| | |
Authors:
|
Eva Bartels |
Related Documents
:
|
8912444 - Color doppler sonography of the prostate. 12666224 - Intraobserver and interobserver variability of ovarian volume, gray-scale and color flo... 18984104 - Infrared endoscopic system for bleeding-point detection after flushing with indocyanine... 12066864 - Luteal blood flow during the estrous cycle in mares. 11684544 - Analysis of variable flow doppler hemodialysis access flow measurements and comparison ... 17473454 - The effect of blood decrease on (67)ga uptake by the liver in partially hepatectomized ... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 24 ISSN: 0278-4297 ISO Abbreviation: J Ultrasound Med Publication Date: 2005 Nov |
Date Detail:
|
Created Date: 2005-10-21 Completed Date: 2006-04-04 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: United States |
Other Details:
|
Languages: eng Pagination: 1511-7 Citation Subset: IM |
Affiliation:
|
Department of Clinical Neurophysiology, Georg-August-University Göttingen, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany. bartels.eva@t-online.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Aged, 80 and over Female Humans Intracranial Arteriovenous Malformations / ultrasonography* Male Middle Aged Reproducibility of Results Ultrasonography, Doppler, Color* Ultrasonography, Doppler, Transcranial* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: B-flow sonographic evaluation of hemodialysis fistulas: a comparison with low- and high-pulse repeti...
Next Document: Echocardiography-based selection of quiescent heart phases: implications for cardiac imaging.