Detection of cerebral aneurysm and intracranial vertebral dissection using non-enhanced magnetic resonance imaging in emergency setting: Emphasis on magnitude image of susceptibility-weighted image.
Interv Neuroradiol
; 29(6): 665-673, 2023 Dec.
Article
em En
| MEDLINE
| ID: mdl-35642276
ABSTRACT
PURPOSE:
To evaluate image features and diagnostic performance of susceptibility-weighted image (SWI) in detection of intracranial vertebral artery dissection (VAD) and unruptured intracranial aneurysm (UIA). MATERIALS ANDMETHODS:
From January 2015 to December 2021, symptomatic patients who underwent 3.0â T MR SWI were recruited. For study group, transfemoral cerebral angiography-proven lesions were included, while 11 matched control group with MR angiography were included. Image features of SWI were evaluated. Diagnostic performance and interobserver agreements were calculated for detecting VAD with stenosis and UIA greater than 7â mm.RESULTS:
Total of 110 patients (mean age 60.92 years, female 60/110) were included. In the study group (N = 55), 21 patients (38.2%) had VAD, while 34 patients (61.8%) had UIA. For SWI-detectable VAD, larger parent artery (PA)-dilatation ratio was observed (1.36 vs. 1.84, p = 0.034). For SWI-detectable UIA, larger PA-dome ratio (1.32 vs. 1.90, p = 0.020) and larger PA-height ratio (1.25 vs. 1.77, p = 0.005) were observed. The diagnostic performance and kappa values for VAD with stenosis were as follow sensitivity 91.7 (95% CI 61.5-99.8); specificity 93.9 (95% CI 87.2-97.7); к 0.80. The diagnostic performance for UIA larger than 7â mm were as follow sensitivity 87.5 (95% CI 47.4-99.7); specificity 95.1 (95% CI 88.9-98.4); к 0.73.CONCLUSION:
SWI-detectable lesions were VAD with larger PA-dilatation ratio, and UIA with larger PA-dome ratio, and PA-height ratio. SWI was able to accurately detect VAD with stenosis and UIA larger than 7â mm with substantial interobserver agreements.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aneurisma Intracraniano
/
Dissecação da Artéria Vertebral
Tipo de estudo:
Diagnostic_studies
Limite:
Female
/
Humans
/
Middle aged
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article