PT  - JOURNAL ARTICLE
AU  - Toth, Daniel
AU  - Sommer, Stefan
AU  - Ludovichetti, Riccardo
AU  - Klarhöfer, Markus
AU  - Madjidyar, Jawid
AU  - Thurner, Patrick
AU  - Piccirelli, Marco
AU  - Krepuska, Miklos
AU  - Finkenstädt, Tim
AU  - Guggenberger, Roman
AU  - Winklhofer, Sebastian
AU  - Kulcsar, Zsolt
AU  - Schubert, Tilman
TI  - Visualization of intracranial aneurysms treated with Woven EndoBridge (WEB) devices using Ultrashort Echo Time Magnetic Resonance Imaging (UTE-MRI)
AID  - 10.3174/ajnr.A8401
DP  - 2024 Jul 03
TA  - American Journal of Neuroradiology
PG  - ajnr.A8401
4099  - http://www.ajnr.org/content/early/2024/07/03/ajnr.A8401.short
4100  - http://www.ajnr.org/content/early/2024/07/03/ajnr.A8401.full
AB  - BACKGROUND AND PURPOSE: Assessing treatment success of intracranial aneurysms treated with Woven EndoBridge (WEB) devices using MRI is important in follow-up imaging. Depicting both the device configuration as well as reperfusion is challenging due to susceptibility artefacts. We evaluated the usefulness of contrast-enhanced 3D-Ultrashort Echo-Time (UTE) sequence in this setting.MATERIALS AND METHODS: In this prospective study, 12 patients (9 female) with 15 treated aneurysms were included. These 12 patients underwent 18 MRI examinations. Follow-up UTE-MRI controls were performed on the same 3-Tesla scanner. We compared the visualization of device configuration, artifact-related virtual stenosis of the parent vessel and WEB occlusion scale in 3D isotropic UTE-MRI post-contrast with standard time-of-flight (TOF) MR-angiography with (CE) and without intravenous contrast as well as DSA. Two interventional neuroradiologists rated the images separately and in consensus.RESULTS: Visualization of the WEB device position and configuration was rated superior or highly superior using the UTE sequence in 17/18 MRIs compared to TOF-MRA. Artifact-related virtual stenosis of the parent vessel was significantly lower in UTE-MRI compared to TOF and CE-TOF. Reperfusion was visible in 8/18 controls in DSA. TOF was able to grade reperfusion correctly in 16 cases, CE-TOF in 16 cases and UTE in 17 cases.CONCLUSIONS: Contrast-enhanced UTE is a novel MRI sequence that shows benefit compared to standard sequences in non-invasive and radiation-free follow-up imaging of intracranial aneurysms treated using the WEB-device.ABBREVIATIONS: ACoA = anterior communicating artery, BA = basilar artery, CEA = contrast enhanced angiography, ICA = internal carotid artery, MCA = middle cerebral artery, PCom = posterior communicating artery TOF-CE = contrast enhanced time-of-flight angiography, UTE = ultra-short echo time, WEB = woven endobridge