ORIGINAL RESEARCH INTERVENTIONAL Assessment of 4D MR Angiography at 3T Compared with DSA for the Follow-up of Embolized Brain Dural Arteriovenous Fistula: A Dual-Center Study B. Dissaux, F. Eugène, J. Ognard, J.-Y. Gauvrit, J.-C. Gentric, and J.-C. Ferré ABSTRACT BACKGROUND AND PURPOSE: 4D contrast-enhanced MRA in the follow-up of treated dural arteriovenous ﬁstulas has rarely been evaluated. Our aim was to evaluate its diagnostic performance at 3T in the follow-up of embolized dural arteriovenous ﬁstulas using DSA as the standard of reference. MATERIALS AND METHODS: Patients treated for dural arteriovenous ﬁstulas in 2 centers between 2008 and 2019 were included if they met the following criteria: 1) dural arteriovenous ﬁstula embolization, and 2) follow-up imaging with ,6 months between DSA and 4D contrast-enhanced MRA. Two readers reviewed the 4D contrast-enhanced MRA images, ﬁrst independently, then in consen- sus to detect any residual/recurrent dural arteriovenous ﬁstula and to grade cases according to the Cognard classiﬁcation system. Interobserver and intermodality agreement for the detection of a residual dural arteriovenous ﬁstula and stratiﬁcation of bleeding risk (0-I-IIa; IIb-IIa+b-III-IV-V) was calculated using k coefﬁcients. RESULTS: A total of 51 pairs of examinations for 44 patients (median age, 65 years; range, 25–81 years) were
American Journal of Neuroradiology – American Journal of Neuroradiology
Published: Feb 1, 2021
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