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The Comparative Study on Diagnostic Validity of Cerebral Aneurysm by Computed Tomography Angiography Versus Digital Subtraction Angiography After Subarachnoid Hemorrhage



Saboori M1 ; Hekmatnia A2, 3 ; Ghazavi A2, 3 ; Basiratnia R4 ; Omidifar N5 ; Hekmatnia F6 ; Isfahani HN7
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Authors Affiliations
  1. 1. Department of Neurosurgery, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Radiology, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Radiology, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Radiology, Isfahan University of Medical Sciences, Isfahan, Iran
  5. 5. Resident, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
  6. 6. Medical Student, University of London, United Kingdom
  7. 7. Instructor of Operating Room Department, Faculty of Nursing and Midwifery, Medical University of Isfahan (MUI), Isfahan, Iran

Source: Journal of Research in Medical Sciences Published:2011

Abstract

BACKGROUND: In order to declare the preoperative diagnostic value of brain aneurysms, two radiological modalities, computed tomographic angiography and digital subtraction angiography were compared. METHODS: In this descriptive analytic study, diagnostic value of computed tomographic angiography (CTA) was compared with digital subtraction angiography (DSA). Sensitivity, specificity, positive and negative predictive values were calculated and compared between the two modalities. All data were analyzed with SPSS software, version 16. RESULTS: Mean age of patients was 49.5 ± 9.13 years. 57.9% of subjects were female. CTA showed 89% sensitivity and 100% specificity whereas DSA demonstrated 74% sensitivity and 100% specificity. Positive predictive value of both methods was 100%, but negative predictive value of CTA and DSA was 85% and 69%, respectively. CONCLUSIONS: Based on our data, CTA is a valuable diagnostic modality for detection of brain aneurysm and subarachnoid hemorrhage.
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