Application of rotational digital subtraction angiography and three-dimensional reconstruction in the diagnosis and treatment of intracranial aneurysms
- VernacularTitle:旋转数字减影血管造影及三维重建在颅内动脉瘤诊治中的应用
- Author:
Gangge CHENG
;
Longsong PIAO
;
Lianqiang DONG
- Publication Type:Journal Article
- Keywords:
angiography,digital subtraction;
intracranial aneurysm;
imaging,three-dimensional
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the application of rotational digital subtraction angiography(DSA) with three-dimensional(3D) reconstruction in the diagnosis and treatment of intracranial aneurysms.Methods Philips ALLUR12 system was employed to perform 2D and rotational DSA examination for 35 patients suspected of intracranial aneurysms with subarachnoid hemorrhage,and the 3D reconstruction of the arteries was then performed with computer to gain the stereopicture 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 In the 35 patients,36 intracranial aneurysms out of 30 cases were found by conventional DSA,but there were 7 aneurysms with obscure direction and construction and 3 aneurysms with obscure aneurismal neck,and no sign of aneurysm was found in the other 5 patients by the conventional DSA.After rotational DSA and 3D reconstruction,additional 3 microaneurysms were found,with the result of final diagnosis of 39 aneurysms in total in 33 patients,though if still failed to find an aneurysm in two patients.The overall view of aneurysm,location and size of aneurysmal neck,anatomy of parent artery and vascular branches in the vicinity,and even the microaneurysms manifested themselves clearly by rotational DSA and 3D reconstruction examination,and the sheltering effects due to overlapping artery were avoided.Conclusion Rotational DSA can successfully display the aneurysm sac and anatomical structures of aneurysmal neck and surrounding vascular branches in a 270? rotational optic angle,and a stereopicture of aneurysmal size,direction,parent artery and surrounding vascular branches can be showed more clearly compared with conventional DSA.It can not only greatly improve the diagnostic sensitivity and reduce the rate of misdiagnosis,but also provides the doctors with overall and precise aneurysmal images for the operation and interventional treatment.
