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. 2001 Dec 22;7(Suppl 1):181-6.
doi: 10.1177/15910199010070S128. Epub 2002 Jan 10.

The Accuracy and Usefulness of 3D-DSA and 3D-CT Angiography for Cerebral Aneurysms

F Ishida  1 , K Kawaguchi, M Mizuno, T Hoshino, K Murao, W Taki
Affiliations

The Accuracy and Usefulness of 3D-DSA and 3D-CT Angiography for Cerebral Aneurysms

F Ishida et al. Interv Neuroradiol. .

Abstract

For evaluation of intracranial cerebral aneurysms, three-dimensional (3D) digital subtraction angiography (DSA) and 3D-computed tomographic angiography (CTA) were demonstrated in fifteen patients. The diagnostic accuracy of preoperative 3D-CTA is equal to that of 3D-DSA except for the case with a dissecting aneurysm. The virtual images of 3D-CTA were well correlated with surgical findings. In endovascular treatment of intracranial aneurysms, 3D-DSA had an obvious advantage in obtaining the best working angle of the C-arm. The major branches originating from the dome were depicted on 3D-DSA in two cases that could not be judged on 3D-CTA. The aim of the present study was to verify the difference between 3D-DSA and 3D-CTA for evaluation of intracranial aneurysms.

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Figures

Figure 1
Figure 1
A 59-year-old man with angiogram negative-SAH was referred to our hospital. One week later 3D-CTA revealed a basilar trunk aneurysm. Three-dimensional DSA showed a similar 3D iamge and this aneurysm was confirmed during surgical exposure.
Figure 2
Figure 2
The patient was a 52-year-old woman who experienced sudden onset left oculomotor nerve palsy. Three-dimensional CTA revealed a left IC-PC aneurysm with two blebs near the neck (Left). These blebs were depicted with 3D-DSA (Center) and this image was well correlated with surgical findings (Right).
Figure 3
Figure 3
Three-dimensional DSA revealed a left vertebral dissecting aneurysm. The false lumen was diagnosed clearly observed and it extended from just proximal to the left posterior-inferior cerebellar artery to the union of the vertebral artery. Auto-positioning function provided the best working angle for embolization of the left VA with GDCs (Right).
Figure 4
Figure 4
Left IC-PC aneurysm could not be diagnosed with DSA (Left); however the posterior communicating artery from the dome was imaged using 3D-DSA (Center) and an endoscopic image on 3D-CTA (Right).
Figure 5
Figure 5
The neck remnant of a right IC-PC aneurysm treated with a titanium clip was evaluated using 3D-DSA (A) and 3D-CTA (B). Both 3D-images depicted a small proximal neck remnant.
See this image and copyright information in PMC

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