Document Detail


Three-dimensional transcranial color-coded sonography of cerebral aneurysms.
MedLine Citation:
PMID:  10548659     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND AND PURPOSE: The role of 2-dimensional transcranial color-coded sonography (2D-TCCS) as a diagnostic tool in cases of vascular alteration is unquestioned. The skill of the operator, however, may be responsible for some intertrial variability. The clinical value of a new, workstation-based, 3D reconstruction system for TCCS was evaluated in patients with intracranial aneurysms. METHODS: Thirty patients with 30 intracranial aneurysms were investigated (8 men, 22 women; mean+/-SD age 54+/-17 years). The TCCS examinations were performed with a 2-MHz probe using the power mode. The 3D system (3D-Echotech, Germany) consisted of an electromagnet, which induced a low-intensity magnetic field near the head of the patient. A magnetic position sensor was attached to the ultrasound probe and transmitted the spatial orientation of the probe to a workstation, which also received the corresponding 2D-images from the video-port of the duplex machine. The echo contrast enhancer D-galactose (Levovist, Schering, Germany) was used in all patients to improve the signal-to-noise ratio. All patients underwent presurgical digital subtraction angiography (DSA) to demonstrate the aneurysm. RESULTS: Twenty-nine of 30 angiographically proven intracranial aneurysms (97%) were detected by 3D-TCCS. The aneurysmal diameter estimated by DSA ranged from 3 to 16 mm (mean 7. 2+/-3.6 mm). A comparison of the 3 main diameters of each aneurysm revealed a correlation coefficient of 0.95 between DSA and 3D-TCCS. The 3D determination of the aneurysmal size by 2 experienced sonographers correlated with 0.96. CONCLUSIONS: 3D-TCCS is a new, noninvasive method to investigate intracranial aneurysms. The differentiation between artifacts and true changes of the vessel anatomy is much easier in 3D-TCCS than in conventional 2D-TCCS. The new method yields an excellent correlation with the gold standard, DSA. Because the same 3D-TCCS data can be postprocessed by different investigators, it may be possible to improve reproducibility and increase the objectivity of transcranial color-coded duplex sonography.
Authors:
C Klötzsch; A Bozzato; G Lammers; M Mull; B Lennartz; J Noth
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Stroke; a journal of cerebral circulation     Volume:  30     ISSN:  0039-2499     ISO Abbreviation:  Stroke     Publication Date:  1999 Nov 
Date Detail:
Created Date:  1999-11-23     Completed Date:  1999-11-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0235266     Medline TA:  Stroke     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2285-90     Citation Subset:  IM    
Affiliation:
Department of Neurology, Universitätsklinikum der Rheinisch-Westfälischen Technischen Hochschule, Aachen, Germany. CKloetzsch@t-online.de
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MeSH Terms
Descriptor/Qualifier:
Angiography, Digital Subtraction
Artifacts
Computer Systems
Contrast Media
Electromagnetic Phenomena / instrumentation
Female
Galactose / diagnostic use
Humans
Image Processing, Computer-Assisted / instrumentation,  methods
Intracranial Aneurysm / radiography,  ultrasonography*
Male
Middle Aged
Observer Variation
Polysaccharides / diagnostic use
Reproducibility of Results
Signal Processing, Computer-Assisted
Ultrasonography, Doppler, Color / instrumentation,  methods*
Ultrasonography, Doppler, Transcranial / instrumentation,  methods*
Video Recording
Chemical
Reg. No./Substance:
0/Contrast Media; 0/Polysaccharides; 127279-08-7/SHU 508; 26566-61-0/Galactose

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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