| Intracranial dural arteriovenous fistulas: diagnosis and evaluation with 64-detector row CT angiography. | |
| | |
MedLine Citation:
|
PMID: 20574098 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To analyze the diagnostic effectiveness and application of computed tomographic (CT) angiography by using a new algorithm (hybrid CT angiography) in dural arteriovenous fistulas (AVFs). MATERIALS AND METHODS: Institutional review board approval was obtained for retrospectively postprocessing the raw data from CT angiography by using hybrid CT, which is a mixture of a bone subtraction and masking method for bone removal. The study included 22 patients with 24 dural AVFs and 14 control subjects. The grades in patients with dural AVF determined with hybrid CT angiography and digital subtraction angiography (DSA) were compared, and hybrid CT angiography was applied as a tool for planning endovascular treatment. The adjusted Wald method was used to estimate confidence intervals (CIs), and the Cohen kappa statistic was used to assess interobserver agreement. RESULTS: Hybrid CT angiography in the 24 dural AVFs revealed asymmetric sinus enhancement in 22 lesions (92%), engorged arteries in 19 (79%), transosseous enhanced vessels in 19 (79%), engorged extracranial veins in 13 (54%), engorged cortical veins in seven (29%), and sinus thrombosis in four (17%). In all 24 lesions, at least two of six imaging signs for diagnosis of dural AVFs were present. The kappa test analysis revealed a high level of interobserver agreement (kappa, 0.56-1.00) in reading the diagnostic imaging signs. The observed agreement between DSA and readers was 100% in the cavernous sinus region and in hypoglossal and clival lesions and 78%-89% in the transverse sigmoid sinus. The overall sensitivity, specificity, positive predictive value, and negative predictive value were 0.93 (95% CI: 0.85, 0.97), 0.98 (95% CI: 0.93, 1.00), 0.97 (95% CI: 0.90, 0.99), and 0.95 (95% CI: 0.90, 0.98), respectively. CONCLUSION: Hybrid CT angiography is a promising tool for the diagnosis of dural AVF. It can provide key information necessary for treatment planning. |
| | |
Authors:
|
Chung-Wei Lee; Adam Huang; Yao-Hung Wang; Chung-Yi Yang; Ya-Fang Chen; Hon-Man Liu |
Related Documents
:
|
18511868 - Vessel wall contrast enhancement: a diagnostic sign of cerebral vasculitis. 498908 - Risk-decreasing factors in the angiographic examination of intracranial haemorrhage. 21731998 - Recurrent vertebral hydatid disease: spectrum of mr imaging features. 20569618 - Morphological change of unruptured vertebral artery dissection on serial mr examination... 11510458 - Kinematic mr imaging of the knee. 16423668 - Effects of ultrasound contrast during tissue velocity imaging on regional left ventricu... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Radiology Volume: 256 ISSN: 1527-1315 ISO Abbreviation: Radiology Publication Date: 2010 Jul |
Date Detail:
|
Created Date: 2010-06-24 Completed Date: 2010-07-16 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0401260 Medline TA: Radiology Country: United States |
Other Details:
|
Languages: eng Pagination: 219-28 Citation Subset: AIM; IM |
Affiliation:
|
Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan, Republic of China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Aged Algorithms Angiography, Digital Subtraction Central Nervous System Vascular Malformations / radiography*, therapy Cerebral Angiography / methods* Contrast Media / diagnostic use Female Humans Iohexol / analogs & derivatives, diagnostic use Male Middle Aged Patient Care Planning Predictive Value of Tests Radiographic Image Interpretation, Computer-Assisted Retrospective Studies Sensitivity and Specificity Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
|
0/Contrast Media; 66108-95-0/Iohexol; 73334-07-3/iopromide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Symptomatic Carotid Artery Stenosis: Impairment of Cerebral Autoregulation Measured at the Brain Tis...
Next Document: Diffuse Lung Disease: CT of the Chest with Adaptive Statistical Iterative Reconstruction Technique.