Meniere Disease Clinical Trial
Official title:
Non Enhanced Labyrinth Imaging for the Detection of Endolymphatic Hydrops in Meniere's Disease "NELI Study"
This study includes 30 patients with Meniere's disease confirmed with AAO-HNS criteria. The aim of this study is to compare the new optimized 3D FLAIR sequence developed at our site with a standard 3D FLAIR sequence performed 4h after a single intravenous dose of macrocyclic gadolinium-based contrast agents for the detection of endolymphatic hydrops. The patients will be explored with the new 3D FLAIR optimized sequence before injection (method to validate) and again 4 hours after contrast media administration with the same sequence 3D FLAIR
Meniere's disease (MD) is a pathology of the inner ear defined by episodes of spontaneous vertigo usually accompanied by tinnitus, pressure within the ear and fluctuating sensorineural hearing loss. Endolymphatic hydrops (EH) is the main pathophysiological substratum of Meniere's disease. Temporal bone MRI has long been used performed to exclude other pathologies mimicking MD, such as vestibular schwannoma or endolymphatic sac tumor. Currently, delayed 3D-FLAIR sequence is the imaging technique of choice for the diagnosis of endolymphatic hydrops. The endolymphatic space could be assessed on MRI with 3D-FLAIR sequences delayed acquisition after the intravenous administration of gadolinium. The saccule appears to be the most involved structure in MD. The reproducibility of the hydrops protocols with various MRI scan manufacturers is debatable. Because endo and peri lymphatic spaces have different biochemical compositions, a new FLAIR 3D sequence on healthy volunteers can be tuned in order to separate endo and peri lymphatic spaces. The hypothesis of the study is that this new method could detect saccular hydrops with the same performances as the standard FLAIR that is done after gadolinium injection. This study will prospectively include 30 patients with MD confirmed with AAO-HNS criteria . All patients will sign an informed consent. They will be explored with the new 3D FLAIR optimized sequence without injection (method to validate). Then, they will be injected, and they will be explored again 4 hours after contrast product administration with the same sequence (the reference method),to take advantage of the intravenous injection of gadolinium that will be performed in the care. The optimized non enhanced 3D FLAIR sequence will be compared with the reference method and with the same sequence four hours after gadolinium injection. ;
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