J Korean Radiol Soc.  1999 Jun;40(6):1035-1040. 10.3348/jkrs.1999.40.6.1035.

Diagnostic Accuracy of Three-dimensional CT Angiography in Intracranial Aneurysms

• Pyeun YS
• Byun HS
• Na DG
• Kim SK
• Paik CH
• Kim JS
• Hong SC
• Kim JH

• KMID: 2200924
• DOI: http://doi.org/10.3348/jkrs.1999.40.6.1035

Abstract

PURPOSE: To determine the accuracy of three-dimensional CT angiography(CTA) in the diagnosis of intracranialaneurysms.
MATERIALS AND METHODS
3D-CTA was performed in 46 consecutive patients with subarachnoid hemorrhage orsuspected intracranial aneurysm. Images were obtained using a helical CT scanner and the SSD techinque. 3D CTAfindings were reviewed retrospectively and independently in blind fashion by two neuroradiologists. Digitalsubtraction angiography(DSA) was used as the reference standard.
RESULTS
DSA revealed, in 36 patients, 40aneurysms ranging from 2mm to 12mm in maximal diameter, and negative findings in 10 patients. For observer 1, theaccuracy of 3D-CTA for all aneurysms and all patients was 85.2% and 82.7%, respectively. For observer 2, therespective figures were 94.6% and 91.9%. The agreement rates between the two observers were 86% for all aneurysmsand 87% for all patients (Kappa value 0.58, 0.59).
CONCLUSION
Three-dimensional CTA is a useful imagingtechnique for the diagnosis of intracranial aneurysms, with an accuracy of over 85%

Keyword

Aneurysm, cerebral; Computed Tomography(CT), angiography; Computed Tomography(CT), comparative studies

MeSH Terms

Aneurysm
Angiography*
Diagnosis
Humans
Intracranial Aneurysm*
Retrospective Studies
Silver Sulfadiazine
Subarachnoid Hemorrhage
Tomography, Spiral Computed
Silver Sulfadiazine