Imaging Endolymphatic Hydrops at 3 Tesla Using 3D-FLAIR with Intratympanic Gd-DTPA Administration

• DOI: 10.2463/mrms.7.85
• Publication Date: 2008-07-07T05:50:18Z
• Authors: Shinji NAGANAWA; Hiroko SATAKE; Shingo IWANO; Hiroshi FUKATSU; Michihiko SONE; Tsutomu NAKASHIMA
• Keywords: Fluid-attenuated inversion recovery; Endolymphatic hydrops; Vestibule

Purpose: Visualization of endolymphatic hydrops by 3-dimensional fluid-attenuated inversion recovery-FLAIR using conventional turbo-spin-echo (3D-FLAIR-CONV) after intratympanic injection Gd-DTPA has been reported in patients with Ménière's disease. Compared to 3D-FLAIR-CONV used previous studies, the addition a variable flip-angle technique (3D-FLAIR-VFL) enables very long echo trains and, therefore, shorter scan times. We evaluated whether 3D-FLAIR-VFL could replace detecting administration. Methods: Eleven were included this study. Twenty-four hours injection, we performed and imaging at 3T. compared contrast-to-noise ratio (CNR) between cochlear fluid cerebellum 2 FLAIR sequences. subjectively scored size space cochlea vestibule for each patient correlated scores clinical diagnoses. Results: The CNR was significantly higher than that 3D-FLAIR-VFL. Scores identical sequences; however, those disagreed 3 cases. better Conclusions: Currently, may not be able 3D-FLAIR-VFL, least scanning parameters present