| Acute stroke in cats: comparison of dynamic susceptibility-contrast MR imaging with T2- and diffusion-weighted MR imaging. | |
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MedLine Citation:
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PMID: 8372198 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate the hemodynamics of acute stroke in cats by means of dynamic susceptibility-contrast magnetic resonance (MR) imaging compared with standard T2- and diffusion-weighted MR imaging. MATERIALS AND METHODS: Unilateral permanent occlusion of the middle cerebral artery was performed in 18 cats. MR imaging was performed with each method 2 hours (n = 2), 6 hours (n = 10), and 24 hours (n = 11) after occlusion. RESULTS: At every time point, dynamic MR images clearly showed ischemic regions of steady-state signal hyperintensity and areas of less dynamic decrease in signal intensity that corresponded closely to those seen on diffusion-weighted MR images. T2-weighted MR images did not reveal regions of high signal intensity 2 hours after occlusion. The measurements of relative blood volume obtained with the dynamic method were significantly lower in steady-state hyperintense ischemic areas of the affected side than those in the contralateral normal areas at 6 and 24 hours (P < .001). CONCLUSION: This dynamic method can advance the time of detection of early ischemia in comparison with T2-weighted MR imaging and provides functional information about hemodynamics not provided by other methods of MR imaging. |
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Authors:
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M Maeda; S Itoh; H Ide; T Matsuda; H Kobayashi; T Kubota; Y Ishii |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Radiology Volume: 189 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1993 Oct |
Date Detail:
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Created Date: 1993-10-14 Completed Date: 1993-10-14 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 227-32 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Fukui Medical School, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acute Disease Animals Blood Volume / physiology Brain Ischemia / pathology, physiopathology* Cats Cerebral Cortex / pathology, physiopathology Cerebrovascular Circulation / physiology Cerebrovascular Disorders / pathology, physiopathology* Contrast Media Diffusion Drug Combinations Gadolinium / diagnostic use Gadolinium DTPA Hemodynamics Image Enhancement / methods* Magnetic Resonance Imaging / methods* Meglumine / diagnostic use Organometallic Compounds / diagnostic use Pentetic Acid / diagnostic use Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 0/Drug Combinations; 0/Organometallic Compounds; 6284-40-8/Meglumine; 67-43-6/Pentetic Acid; 7440-54-2/Gadolinium; 80529-93-7/Gadolinium DTPA |
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