B0 images obtained from diffusion-weighted echo planar sequences for the detection of intracerebral bleeds
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AbstractBackground and Purpose. To evaluate the accuracy of 130 echo planar imaging (EPI) sequences for the detection of intracerebral bleeds. Methods. One hundred patients with acute strokes had magnetic resonance imaging and computed tomography (CT) examinations performed within 48 hours after the onset of symptoms. The detectability of intracerebral bleeds by the B0 EPI sequences was assessed. The results were compared to the gradient echo (GRE) sequence and CT brain examinations. The results of the GRE sequences were used as the gold standard. Results. The 130 EPI sequences detected 11 out of 11 acute, intracerebral hematomas; 6 out of 8 acute hemorrhagic strokes; 2 out of 2 acute, intraventricular hemorrhages; 8 out of 8 old hemorrhagic infarcts; 1 out of 1 subarachnoid hemorrhages; and 11 out of 22 patients with microbleeds. For the detection of acute, intracerebral hematomas and acute, hemorrhagic infarcts, 130 EPI sequences had a sensitivity of 89.5%, a specificity of 100%, and an accuracy of 98%. CT had a sensitivity of 57.9%, a specificity of 100%, and an accuracy of 92%. B0 EPI sequences did not miss any acute or chronic hemorrhages detected by CT examinations. Conclusions. B0 EPI sequences could not replace GRE images for the detection of both acute and chronic hemorrhages. Their sensitivity for the detection of acute and chronic blood products, however, was comparable, if not superior, to that of CT examinations.
All Author(s) ListLam WWM, So NMC, Wong KS, Rainer T
Journal nameJournal of Neuroimaging
Year2003
Month4
Day1
Volume Number13
Issue Number2
PublisherSAGE PUBLICATIONS INC
Pages99 - 105
ISSN1051-2284
eISSN1552-6569
LanguagesEnglish-United Kingdom
Keywordsdiffusion; hemorrhage; magnetic resonance; perfusion
Web of Science Subject CategoriesClinical Neurology; CLINICAL NEUROLOGY; Neuroimaging; NEUROIMAGING; Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging; RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Last updated on 2020-19-10 at 02:34