Accuracy of Diffusion-Weighted Imaging in the Diagnosis of Stroke in Patients With Suspected Cerebral Infarct-Reference-Cited by-同舟云学术

Accuracy of Diffusion-Weighted Imaging in the Diagnosis of Stroke in Patients With Suspected Cerebral Infarct

Published:2013-04 Issue:4 Volume:44 Page:1169-1171
ISSN:0039-2499
Container-title:Stroke
language:en
Short-container-title:Stroke

Author:

Brunser Alejandro M.¹,Hoppe Arnold¹,Illanes Sergio¹,Díaz Violeta¹,Muñoz Paula¹,Cárcamo Daniel¹,Olavarria Verónica¹,Valenzuela Marcela¹,Lavados Pablo¹

Affiliation:

1. From the Cerebrovascular Program, Neurology Service, Department of Internal Medicine Clínica Alemana de Santiago, Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile (A.M.B., A.H., S.I., V.D., P.M., D.C., V.O., M.V., P.L.).

Abstract

Background and Purpose— The accuracy of diffusion-weighted imaging (DWI) for the diagnosis of acute cerebral ischemia among patients with suspected ischemic stroke arriving to an emergency room has not been studied in depth. Methods— DWI was performed in 712 patients with acute or subacute focal symptoms that suggested an acute ischemic stroke (AIS), 609 of them with AIS. Results— DWI demonstrated a sensitivity of 90% and specificity of 97%, a positive likelihood ratio of 31 and a negative likelihood ratio of 0.1 for detecting AIS. The overall accuracy was 95%. Of those patients who demonstrated abnormal DWI studies, 99.5% were AIS patients, and of those patients with normal DWI studies 63% were stroke mimics. Conclusions— DWI is accurate in detecting AIS in unselected patients with suspected AIS; a negative study should alert for nonischemic conditions.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Advanced and Specialized Nursing,Cardiology and Cardiovascular Medicine,Neurology (clinical)

Link

https://www.ahajournals.org/doi/pdf/10.1161/STROKEAHA.111.000527

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