Follow-up of intracranial aneurysms treated by flow diverter: comparison of three-dimensional time-of-flight MR angiography (3D-TOF-MRA) and contrast-enhanced MR angiography (CE-MRA) sequences with digital subtraction angiography as the gold standard

Jonathan Attali 1 Azzedine Benaissa 1 Sébastien Soize 1 Krzysztof Kadziolka 1 Christophe Portefaix 2 Laurent Pierot 1
1 Department of radiology, Hôpital Maison Blanche, Université de Champagne-Ardenne, Reims, France
2 CRESTIC - Centre de Recherche en Sciences et Technologies de l'Information et de la Communication - EA 3804
Abstract : Background and purpose: Follow-up of intracranial aneurysms treated by flow diverter with MRI is complicated by imaging artifacts produced by these devices. This study compares the diagnostic accuracy of three-dimensional time-of-flight MR angiography (3D-TOF-MRA) and contrast-enhanced MRA (CE-MRA) at 3 T for the evaluation of aneurysm occlusion and parent artery patency after flow diversion treatment, with digital subtraction angiography (DSA) as the gold standard. Materials and methods: Patients treated with flow diverters between January 2009 and January 2013 followed by MRA at 3 T (3D-TOF-MRA and CE-MRA) and DSA within a 48 h period were included in a prospective single-center study. Aneurysm occlusion was assessed with full and simplified Montreal scales and parent artery patency with three-grade and two-grade scales. Results: Twenty-two patients harboring 23 treated aneurysms were included. Interobserver agreement using simplified scales for occlusion (Montreal) and parent artery patency were higher for DSA (0.88 and 0.61) and CE-MRA (0.74 and 0.55) than for 3D-TOF-MRA (0.51 and 0.02). Intermodality agreement was higher for CE-MRA (0.88 and 0.32) than for 3D-TOF-MRA (0.59 and 0.11). CE-MRA yielded better accuracy than 3D-TOF-MRA for aneurysm remnant detection (sensitivity 83% vs 50%; specificity 100% vs 100%) and for the status of the parent artery (specificity 63% vs 32%; sensitivity 100% vs 100%). Conclusions: At 3 T, CE-MRA is superior to 3D-TOF-MRA for the evaluation of aneurysm occlusion and parent artery patency after flow diversion treatment. However, intraluminal evaluation remains difficult with MRA regardless of the sequence used.
Document type :
Journal articles
Complete list of metadatas
https://hal.univ-reims.fr/hal-01822474
Contributor : Nicolas Passat <>
Submitted on : Monday, June 25, 2018 - 10:48:48 AM
Last modification on : Tuesday, June 26, 2018 - 1:02:18 AM

Identifiers

  • HAL Id : hal-01822474, version 1

Collections

URCA | CRESTIC

Citation

Jonathan Attali, Azzedine Benaissa, Sébastien Soize, Krzysztof Kadziolka, Christophe Portefaix, et al.. Follow-up of intracranial aneurysms treated by flow diverter: comparison of three-dimensional time-of-flight MR angiography (3D-TOF-MRA) and contrast-enhanced MR angiography (CE-MRA) sequences with digital subtraction angiography as the gold standard. Journal of Neurointerventional Surgery, BMJ Journals, 2016, 8 (1), pp.81-86. ⟨hal-01822474⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

25

 

HAL-contact@univ-reims.fr