Prevalence of Unruptured Intracranial Aneurysm on MR Angiography
Korean Journal of Radiology
;
: 547-553, 2011.
Artigo
em Inglês
| WPRIM
| ID: wpr-121842
ABSTRACT
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 ANDMETHODS:
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 (MF = 4394; 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.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Angiografia Cerebral
/
Angiografia Digital
/
Aneurisma Intracraniano
/
Aneurisma Roto
/
Angiografia por Ressonância Magnética
/
Achados Incidentais
Tipo de estudo:
Estudo diagnóstico
/
Guia de Prática Clínica
/
Estudo observacional
/
Estudo de prevalência
Limite:
Adolescente
/
Adulto
/
Idoso
/
Aged80
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Korean Journal of Radiology
Ano de publicação:
2011
Tipo de documento:
Artigo
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