Three-dimensional image reconstruction using rotational digital subtraction technique:the initial experience of the clinical application / 中华放射学杂志

ABSTRACT

Objective To evaluate the benefit of three dimensional (3D) reconstruction images with rotational digital subtraction technique for the clinical applications Methods Conventional two dimensional digital substraction angiography ( 2D DSA ) was obtained on A P and lateral view. Three dimensional digital subtraction angiography ( 3D DSA ) images were obtained by reconstruction of a rotational acquisition on a C arm (LCV+, GE Medical Systems) spinning at 40 degrees per second 53 cases of cerebral angiographies were performed (32 men and 21 women; the age ranged from 19 to 72 years, mean 46 3 years) Results In this series of 53 cases of cerebral angiographies, 5 cases of arteriovenous malformation were all correctly diagnosed by 3D DSA and 2D DSA . Seven cases were misdiagnosed as intracranial aneurysms at conventional 2D DSA but confirmed to be kinking of the vessel by 3D DSA . 41 cases were confirmed to be intracranial aneurysms Of the 41 cases, 5 cases were diagnosed as normal at 2D DSA but confirmed to be intracranial aneurysms at 3D DSA . The total consistency rate of 3D DSA and 2D DSA for the diagnosis of intracranial aneurysm is 77 4% (41/53) The consistent test shows that there was consistency between the two modalities (chi square test, ? 2=5 267, P