Application of multislice computerized tomography angiography in the evaluation of intracranial aneurysms

Objective To evaluate the value of multislice computerized tomography angiography (MSCTA) in the detection and treatment of intracranial aneurysms. Methods Thirty-two patients with aneurysmal subarachnoid hemorrhage (15 males and 17 females, age ranged from 46~74 years, mean age of 58.4 years) were performed both MSCTA and DSA. Reconstruction types of MSCTA included shaded surface display (SSD), maximum intensity projection (MIP), volume rederening (VR), and curved plane reconstruction (CPR). ResultsA total of 38 aneurysms were found in 32 patients with aneurysmal subarachnoid hemorrhage, among which 34 aneurysms were found by MSCTA, and 35 found by DSA. The accuracy for MSCTA and DSA was 89.5% and 92.1% respectively. No statistical significant difference was found between these two methods (paired χ 2 test, P0.05). Conclusion MSCTA not only is accurate in diagnosis of intracranial aneurysms, but also can precisely display the size, configuration and direction of intracranial aneurysms, and their anatomic connection with surrounding vessels and bones, as compared with DSA; which is a useful supplementary to DSA and plays an important role in guiding operation.