False-negative diffusion-weighted imaging findings in acute stroke
نویسندگان
چکیده
منابع مشابه
False-negative diffusion-weighted MR findings in acute ischemic stroke.
BACKGROUND AND PURPOSE Lesions associated with acute stroke are often missed by diffusion-weighted imaging (DWI), suggesting that the sensitivity of this technique for detecting acute ischemic stroke may not be as high as initially thought. Our aim was to estimate the rate of false-negative DWI studies in patients with persistent neurologic deficit due to an ischemic stroke and to identify whic...
متن کاملFalse-negative diffusion-weighted imaging with lateral medullary infarction.
A 55-year-old1 man awoke with left ear pain, vertigo, vomiting, left facial numbness, and ataxic gait. MRI including diffusionweighted imaging (DWI) performed 2 hours later showed no evidence of acute infarction (figure, A). Repeat MRI 2 days later showed DWI and FLAIR changes consistent with a left lateral medullary infarction (figure, B). False-negative DWI has been reported in 5% of ischemic...
متن کاملDiffusion weighted imaging in acute stroke and stroke mimics: reliability analysis, radiological findings and clinical significance
Background: To assess the reliability and to determine the sensitivity and specificity of Diffusion Weighted Images (DWI) in detection of acute infarcts in patients whose initial CT and conventional MR-sequences did not explain the patients stroke symptoms. The second aim was to find out if DWI provides additional information when it was performed within 2 days of onset of symptoms. Patients an...
متن کاملCase Report of False-Negative Diffusion-Weighted Image of Brain Magnetic Resonance Imaging (MRI) in Acute Ischemic Stroke
BACKGROUND Acute ischemic stroke is a major cause of mortality and morbidity in Taiwan. Diffusion-weighted image (DWI) is a sensitive and common strategy used for imaging acute ischemic stroke. CASE REPORT We present a case of a negative DWI MRI for detecting acute ischemic stroke in a clinical setting. A 75-year-old male had a DWI performed after onset of symptoms suggesting acute ischemic str...
متن کاملDiffusion Weighted Imaging Findings in the Acute Lateral Medullary Infarction
BACKGROUND AND PURPOSE Negative findings on diffusion-weighted imaging (DWI) does not exclude the possibility of brainstem infarction, particularly in the acute stage of medullary lesion. Our aim was to investigate the false-negative rate of DWI in patients with acute lateral medullary infarction. METHODS We applied DWI to 26 patients with a clinical diagnosis of lateral medullary infarction ...
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ژورنال
عنوان ژورنال: Nosotchu
سال: 2006
ISSN: 0912-0726,1883-1923
DOI: 10.3995/jstroke.28.280