Prevalence of Unruptured Intracranial Aneurysm on MR Angiography
Korean Journal of Radiology
; : 547-553, 2011.
Article
en En
| WPRIM
| ID: wpr-121842
Biblioteca responsable:
WPRO
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 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.
Palabras clave
Texto completo:
1
Índice:
WPRIM
Asunto principal:
Angiografía Cerebral
/
Angiografía de Substracción Digital
/
Aneurisma Intracraneal
/
Aneurisma Roto
/
Angiografía por Resonancia Magnética
/
Hallazgos Incidentales
Tipo de estudio:
Diagnostic_studies
/
Guideline
/
Observational_studies
/
Prevalence_studies
Límite:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Korean Journal of Radiology
Año:
2011
Tipo del documento:
Article