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[Digital 3D rotational angiography for the preoperative and preinterventional clarification of cerebral arterial
1Radiologische Abteilung, Landesnervenklinik Linz, Osterreich.
Insights
3D angiography offers enhanced diagnostic value for cerebral aneurysms, improving anatomical assessment and differentiating lesions from vessel loops when used alongside digital subtraction angiography (DSA). This technique provides crucial additional information for accurate diagnosis.
Area of Science:
- Neuroradiology
- Medical Imaging
- Cerebrovascular Diseases
Background:
- Cerebral aneurysms pose a significant diagnostic challenge.
- Digital subtraction angiography (DSA) is a standard diagnostic tool.
- The utility of 3D angiography in conjunction with DSA requires further evaluation.
Purpose of the Study:
- To assess if 3D angiography provides supplementary diagnostic information beyond DSA for cerebral aneurysms.
- To evaluate the role of 3D angiography in differentiating aneurysms from vascular anomalies.
Main Methods:
- A 3-month study involving 40 patients with 49 aneurysms.
- Both DSA and 3D angiography were performed.
- Regions diagnosed with aneurysms by DSA were re-evaluated using 3D angiography.
Main Results:
- 3D angiography identified vessel loops misdiagnosed as aneurysms by DSA in two patients.
- 3D angiography detected aneurysms missed by DSA in two patients and confirmed diagnoses in another two.
- It also excluded aneurysms in two cases and clarified aneurysm-vessel relationships in one.
Conclusions:
- 3D angiography enhances the evaluation of aneurysm base and its relationship with adjacent vessels.
- It accurately differentiates between aneurysms and vessel loops.
- 3D angiography is a valuable adjunct to DSA for cerebral aneurysm diagnosis.
Objective:
Does the recently introduced 3D angiography provide additional information beyond standard angiography (DSA) for the diagnosis of cerebral aneurysms?
Methods:
During a 3-months period DSA and 3D-angiography were performed in 40 patients harbouring a total of 49 aneurysms. Vascular regions that presented an aneurysm diagnosed by DSA were reevaluated by 3D-angiography.
Results:
In two patients, vessel-loops previously described as aneurysms by DSA could be identified by 3D-angiography. In one patient, an aneurysm was diagnosed that could not be detected by DSA. In another case, the definitive diagnosis of an aneurysm was obtained only with 3D-angiography. In one patient, an aneurysm was diagnosed that could not be detected by DSA. In another case, the diagnosis of an aneurysm was obtained only with 3D-angiography. In two cases, aneurysms could be definitively excluded by 3D-angiography, whereas in another aneurysm a vessel originating from this lesion was identified. The size of the aneurysms measured by both methods was identical.
Conclusions:
Multiple projections of 3D-angiography provide a better evaluation of the anatomic situation regarding the base of the aneurysm as well as the relationship of an aneurysm to neighbouring vessels. Further, an exact differentiation between a vessel loop and an aneurysm can be made. Therefore, 3D-angiography is a valuable tool when used in conjunction with DSA.