Comparison of Non-invasive Imaging Studies in the Evaluation of Carotid Artery Stenosis and Occlusion: CT Angiography, Time-of-Flight MR Angiography and Contrast-Enhanced MR Angiography
Journal of the Korean Society of Magnetic Resonance in Medicine
;
: 234-241, 2011.
Article
in Korean
| WPRIM
| ID: wpr-27666
ABSTRACT
PURPOSE:
We compared non-invasive imaging studies of CTA, TOF-MRA and CE-MRA to evaluate detecting internal carotid artery stenosis and occlusion. MATERIALS ANDMETHODS:
We enrolled 20 patients with clinically suspected internal carotid artery stenosis and occlusion, or asymptomatic patient with more than 50% stenosis suspected on color Doppler ultrasonography for regular check-up. Prospectively, CTA, TOF-MRA and CE-MRA were performed, and sensitivity, specificity, positive predictive value, negative predictive value and accuracy of TOF-MRA and CE-MRA using CTA as a reference standard for detecting more than 50% stenosis were evaluated, and correlations of measured percent stenosis between 3 imaging studies were also evaluated.RESULTS:
No significant difference was found between 3 imaging studies in measuring stenosis(p>0.05). Correlation coefficient was 0.932 between CTA and TOF-MRA, and 0.971 between CTA and CE-MRA. TOF-MRA had 83.3% sensitivity, 87.5% specificity, 71.4% positive predictive value, 93.3% negative predictive value and 86.4% accuracy for detecting more than 50% stenosis and occlusion. CE-MRA had 83.3% sensitivity, 93.8% specificity, 83.3% positive predictive value, 93.8% negative predictive value and 90.9% accuracy.CONCLUSION:
TOF-MRA and CE-MRA provided high correlations in the evaluation of internal carotid artery stenosis and occlusion.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Angiography
/
Carotid Arteries
/
Prospective Studies
/
Sensitivity and Specificity
/
Carotid Stenosis
/
Ultrasonography, Doppler, Color
/
Constriction, Pathologic
Type of study:
Diagnostic study
/
Observational study
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Society of Magnetic Resonance in Medicine
Year:
2011
Type:
Article
Similar
MEDLINE
...
LILACS
LIS