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  • Title: [Clinically silent cerebral embolisms after cerebral catheter angiography].
    Author: Hähnel S, Bender J, Jansen O, Hartmann M, Knauth M, Büsing K, Sartor K.
    Journal: Rofo; 2001 Apr; 173(4):300-5. PubMed ID: 11367837.
    Abstract:
    PURPOSE: To assess for the incidence of clinically silent cerebral lesions after cerebral catheter angiography. METHODS: MRI including PD-, T2-, and diffusion-weighted images was performed shortly before and after 27 cerebral catheter angiographies. RESULTS: After 5/27 angiographies (18.5%) we found 6 new, presumably embolic cerebral lesions with a typical diameter of 2-3 mm on diffusion-weighted images. No correlation was found between the occurrence of these lesions and a preexisting arteriosclerotic cerebrovascular disease, fluoroscopy time, or number of angiographic series. CONCLUSION: Cerebral angiography appears to be associated with a relatively high risk (about 20%) of clinically silent cerebral embolism. This risk is higher than has been estimated based on the incidence of neurological deficits (0.1-0.3%) after cerebral angiography. The safety of cerebral angiography needs to be improved. Diffusion-weighted MR imaging is suitable to monitor the safety of angiographic procedures and material.
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