Intracranial aneurysms: evaluation using CTA and MRA. Correlation with DSA and intraoperative findings

Computed tomographic angiography (CTA) and magnetic resonance angiography (MSA) have been used recently for evaluation of intracranial aneurysms. If they are to replace conventional digital subtraction angiography (DSA), their sensitivity and specificity should be equal to the latter. In order to de...

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Bibliographic Details
Published in:Neuroradiology 2004-10, Vol.46 (10), p.842-850
Main Authors: KOUSKOURAS, C, CHARITANTI, A, GIAVROGLOU, C, FOROGLOU, N, SELVIARIDIS, P, KONTOPOULOS, V, DIMITRIADIS, A. S
Format: Article
Language:English
Subjects:
Adult
Aged
Aneurysms
Angiography, Digital Subtraction
Biological and medical sciences
Cerebral Angiography
Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves
Electrodiagnosis. Electric activity recording
Female
Humans
Intracranial Aneurysm - diagnosis
Intracranial Aneurysm - surgery
Investigative techniques, diagnostic techniques (general aspects)
Magnetic Resonance Angiography
Male
Medical sciences
Middle Aged
Nervous system
Neurosurgery
NMR
Nuclear magnetic resonance
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Reproducibility of Results
Sensitivity and Specificity
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Tomography
Tomography, Spiral Computed
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Summary:Computed tomographic angiography (CTA) and magnetic resonance angiography (MSA) have been used recently for evaluation of intracranial aneurysms. If they are to replace conventional digital subtraction angiography (DSA), their sensitivity and specificity should be equal to the latter. In order to determine whether computed tomographic angiography and magnetic resonance angiography can provide the necessary information for presurgical evaluation we compared blindly the results of helical CT angiography and MR angiography with the results of digital subtraction angiography and the intraoperative findings. We evaluated 35 patients with the possible clinical diagnosis of intracranial aneurysm. Our data suggest that both CTA and MRA can provide valuable preoperative information concerning the location, the characteristics and the relationships of most intracranial aneurysms. Both original and reconstructed images should be evaluated together for higher accuracy. In addition helical CT, being a fast, inexpensive and noninvasive method, can be used as a reliable alternative to DSA in emergency situations demanding immediate operation.
ISSN:0028-3940
1432-1920
DOI:10.1007/s00234-004-1259-2