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Cerebrovasc Dis 1994;4:273–279
(DOI:10.1159/000108494)

Middle Cerebral Artery Stenoses: Assessment by Magnetic Resonance Angiography and Transcranial Doppler Ultrasound

Röther J.a · Schwartz A.a · Wentz K.U.b · Rautenberg W.a · Hennerici M.a

Author affiliations

a Department of Neurology, University of Heidelberg, Klinikum Mannheim, and b EFMT, Bochum, FRG

Corresponding Author

Dr. Joachim Röther, Neurologische Universitätsklinik, Klinikum Mannheim der Universität Heidelberg, Theodor-Kutzer-Ufer, D–68167 Mannheim (FRG)

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Abstract

Magnetic resonance angiography (MRA) findings of uni- or bilateral middle cerebral artery (MCA) stenosis were compared with results of transcranial Doppler ultrasound (TCD) and digital subtraction angiography (DSA). Eighteen patients with 22 MCA stenoses were selected by TCD criteria. To evaluate the diagnostic accuracy of MRA, TCD and DSA, criteria for classification of stenoses were established. MRA confirmed 21 MCA stenoses as revealed by TCD (n = 22). DSA did not demonstrate MCA stenoses in 6 cases diagnosed by TCD (classification grade I) and MRA. The classification of MCA stenoses by MRA correlated with TCD in 11 (50%) cases, while stenosis was underestimated by MRA in 3 (14%) and overestimated in 8 (36%) MCAs. Whereas the sensitivity of MRA for the detection of MCA stenoses compared to TCD and DSA findings was very high (100%), the correlation of the degree of stenosis by the three techniques was poor. This discordance is partly due to the insufficiency of routine DSA to reliably estimate the degree of stenosis since it delivers only one anterior-posterior projection plane. The combination of MRA and TCD is a noninvasive regime of high sensitivity to ensure the diagnosis of MCA stenosis and to estimate the severity of obstruction.

© 1994 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: May 25, 1994

Number of Print Pages: 7
Number of Figures: 0
Number of Tables: 0

ISSN: 1015-9770 (Print)
eISSN: 1421-9786 (Online)

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