| Perfusion computed tomography in a dural arteriovenous fistula presenting with focal signs: vascular congestion as a cause of reversible neurologic dysfunction. | |
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MedLine Citation:
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PMID: 20023531 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To describe the use of perfusion computed tomography (PCT) in the study of hemodynamic disturbances associated with a case of a cerebral dural arteriovenous fistula (DAVF) with leptomeningeal venous drainage presenting with focal signs. CLINICAL PRESENTATION: A 79-year-old man presented because of loss of strength in the right arm. On examination, he presented mild right-side hemiparesis. Magnetic resonance imaging showed the presence of a left frontoparietal hyperintense lesion on T2-weighted images. Magnetic resonance angiography and digital substraction angiography (DSA) showed a convexity Borden type III DAVF. The DAVF was embolized with bucrylate, and control DSA showed complete obliteration of the malformation. The patient improved from his clinical presentation and 6 months after treatment was asymptomatic. TECHNIQUE: Perfusion computed tomography was performed before and after treatment. All imaging studies were performed on a 6-slice spiral computed tomography scanner. Each series studied a 2.4-cm slide of brain at the level of the cerebral convexity where the DAVF was located. Quantitative perfusion data were obtained from significant regions of interest of both hemispheres, and an interhemispheric ratio (IR) was calculated. Pretreatment PCT showed an increase in mean transient time (IR = 2.2) and time to peak (IR = 1.15), with an increase in cerebral blood volume (IR = 1.9) in the left frontal areas related to a similar area in the contralateral hemisphere. Six months after treatment, perfusion maps did not show any interhemispheric difference. CONCLUSION: Perfusion computed tomography could help to identify the hemodynamic disturbances associated with DAVFs with leptomeningeal venous drainage. |
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Authors:
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Alfonso Lagares; Jos? Mar?a Mill?n; Ana Ramos; Jos? A F Al?n; Jes?s Hern?ndez Gallego |
Publication Detail:
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Type: Case Reports; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Neurosurgery Volume: 66 ISSN: 1524-4040 ISO Abbreviation: Neurosurgery Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-12-21 Completed Date: 2010-03-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7802914 Medline TA: Neurosurgery Country: United States |
Other Details:
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Languages: eng Pagination: E226-7; discussion E227 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, Hospital 12 de Octubre, Crta de Andalucia km 5, 4, Madrid 28041, Spain. algadoc@yahoo.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Angiography, Digital Subtraction / methods Central Nervous System Vascular Malformations / complications*, pathology*, radiotherapy Cerebrovascular Circulation / physiology* Humans Hyperemia / etiology* Magnetic Resonance Angiography / methods Magnetic Resonance Imaging / methods Male Perfusion Imaging* Tomography, X-Ray Computed / methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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