Document Detail

Prevalence of unruptured intracranial aneurysm on MR angiography.
MedLine Citation:
PMID:  21927555     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate the prevalence of incidentally found unruptured intracranial aneurysms (UIAs) on the brain MR angiography (MRA) from a community-based general hospital.
MATERIALS AND METHODS: This was a prospectively collected retrospective study, carried out from January 2004 to December 2004. The subjects included 3049 persons from a community-based hospital in whom MRA was performed according to a standardized protocol in an outpatient setting. Age- and sex-specific prevalence of UIAs was calculated. The results by MRA were compared with intra-arterial digital subtraction angiography (DSA) findings.
RESULTS: Unruptured intracranial aneurysms were found in 137 (5%) of the 3049 patients (M:F = 43:94; mean age, 60.2 years). The prevalence of UIAs was 5% (n = 94) in women and 4% (n = 43) in men, respectively (p = 0.2046) and showed no age-related increase. The most common site of aneurysm was at the distal internal carotid artery (n = 64, 39%), followed by the middle cerebral artery (n = 40, 24%). In total, 99% of aneurysms measured less than 12 mm, and 93% of aneurysms measured less than 7 mm. Direct comparisons between MRA and DSA were available in 70 patients with 83 UIAs; the results revealed two false positive and two false negative results.
CONCLUSION: This community-hospital based study suggested a higher prevalence of UIAs observed by MRA than previously reported. These findings should be anticipated in the design and use of neuroimaging in clinical practice.
Tae Yeon Jeon; Pyoung Jeon; Keon Ha Kim
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2011-08-24
Journal Detail:
Title:  Korean journal of radiology : official journal of the Korean Radiological Society     Volume:  12     ISSN:  2005-8330     ISO Abbreviation:  Korean J Radiol     Publication Date:    2011 Sep-Oct
Date Detail:
Created Date:  2011-09-19     Completed Date:  2012-01-19     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  100956096     Medline TA:  Korean J Radiol     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  547-53     Citation Subset:  IM    
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.
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MeSH Terms
Aged, 80 and over
Aneurysm, Ruptured / diagnosis
Angiography, Digital Subtraction
Cerebral Angiography
Incidental Findings
Intracranial Aneurysm / diagnosis*,  radiography
Magnetic Resonance Angiography*
Middle Aged
Young Adult

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