Frequency and Pattern of MRI Diffusion Restrictions after Diagnostic Catheter Neuroangiography.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 101671170 Publication Model: Electronic Cited Medium: Internet ISSN: 2379-139X (Electronic) Linking ISSN: 23791381 NLM ISO Abbreviation: Tomography Subsets: MEDLINE

Publication: 2021- : Basel, Switzerland : MDPI
Original Publication: Ann Arbor, Michigan : Grapho Publications LLC, [2015]-

Diffusion Magnetic Resonance Imaging* ; Magnetic Resonance Imaging*/methods; Humans ; Cerebral Infarction/diagnosis ; Cerebral Infarction/etiology ; Cerebral Infarction/pathology ; Contrast Media ; Catheters/adverse effects

(1) Background: We investigated the frequency, location, and lesion size of diffusion restrictions (DR) in magnetic resonance imaging (MRI) of asymptomatic patients after diagnostic angiography and assessed risk factors for their occurrence. (2) Methods: We analyzed diffusion-weighted images (DWI) of 344 patients undergoing diagnostic angiographies in a neuroradiologic center. Only asymptomatic patients who received a magnetic resonance imaging (MRI) examination within seven days after the angiography were included. (3) Results: Asymptomatic infarcts on DWI were identified in 17% of the cases after diagnostic angiography. In these 59 patients, a total of 167 lesions were noted. The diameter of the lesions was 1-5 mm in 128 lesions, and 5-10 mm in 39 cases. Dot-shaped diffusion restrictions were found most frequently ( n = 163, 97.6%). None of the patients had neurological deficits during or after angiography. Significant correlations were found between the occurrence of lesions and patient age ( p < 0.001), history of atherosclerosis ( p = 0.014), cerebral infarction ( p = 0.026), or coronary heart disease/heart attack ( p = 0.027); and the amount of contrast medium used ( p = 0.047) and fluoroscopy time ( p = 0.033). (4) Conclusions: With an incidence of 17%, we observed a comparatively high risk for asymptomatic cerebral ischemia after diagnostic neuroangiography. Further measures to reduce the risk of silent embolic infarcts and improve the safety of neuroangiography are warranted.

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Keywords: angiography; diffusion-weighted imaging; infarction

0 (Contrast Media)

Date Created: 20230523 Date Completed: 20230524 Latest Revision: 20230628

20240628

PMC10204360

10.3390/tomography9030082

37218942