Value Of DSA Three-dimensional Reconstruction In The Diagnosis Of Intracranial Aneurysm

[Objects]To evaluate the role of three-dimensional (3D) reconstruct of digital subtraction angiography (DSA) in the diagnosis of intracranial aneurysm.[Methods]PHILIPS Allura Xper FD20 system was employed to perform 2D and rotational DSA examination for 42 patients of intracranial aneurysms with subarachnoid hemorrhage, and the 3D reconstruction of the arteries was then performed with computer to gain the stereo picture of localization and direction of the aneurysms, shape and size of aneurismal neck and vascular branch anatomy. The rotational DSA and 3D reconstructed images were compared with that of conventional 2D-DSA.[Results]48 aneurysms were fund in 42 patients. A single aneurysm was detected in 46 patients,6 patients has two aneurysms. Of 42 cases,36 cases were treated by surgy, and 4 cases by the endovascular therapy.43 aneurysms in 37 patients were found out with the method of 2D-DSA.The enlargement or backtracking of normal cerebral vessels were confirmed by 3D-DSA in 1 cases, which were suspected to be aneurysms with 2D-DSA.5 mini-aneurysms in 4 patients were detected with 3D-DSA, but were not seen with 2D-DSA.3D-DSA was significantly superior to 2D-DSA, in clinical diagnosis. For overall image quality, the 2D-DSA was excellent and the 3D-DSA was excellent except 1 case,because of moving,no statistically significant difference was found between 2D-DSA and 3D-DSA, (P=0.977). For visualization of aneurysms neck, configuration and relationship to neighboring arteries,3D-DSA significantly superior to those of 2D-DSA (P＜0.001)[Conclusions]More accurate diagnosis and secure treatment of intracranial aneurysms can be reached by 3D-DSA.It is very useful in clinical application of intracranial aneurysms for 3D-DSA...