Naganawa Shinji, Yamazaki Masahiro, Kawai Hisashi, Bokura Kiminori, Iida Tatsuo, Sone Michihiko, Nakashima Tsutomu
Department of Radiology, Nagoya University Graduate School of Medicine.
Magn Reson Med Sci. 2014;13(2):133-7. doi: 10.2463/mrms.2013-0061. Epub 2014 Apr 28.
Endolymphatic hydrops (EH) in Ménière's disease is currently evaluated by 3-dimensional (3D)-real inversion recovery (IR) sequence after intratympanic (IT) administration of gadolinium (Gd) or by heavily T2-weighted (hT2W)-3D-fluid-attenuated IR (FLAIR) sequence after intravenous (IV) injection of Gd. Unilateral IT injection is usually performed. We employed a method in which we simultaneously administered contrast into one ear intravenously (IV side) and into the other ear both intravenously and intratympanically (IT + IV side) to evaluate EH in 10 patients with Ménière's disease. We then compared a HYDROPS2 image obtained by subtracting magnetic resonance cisternography from hT2W-3D-FLAIR with an image obtained by 3D-real IR and found that we could evaluate EH in all ears on the HYDROPS2 image but only in the IT + IV side on the 3D-real IR image.
梅尼埃病的内淋巴积水（EH）目前通过鼓室内（IT）注射钆（Gd）后采用三维（3D）-真实反转恢复（IR）序列进行评估，或在静脉内（IV）注射Gd后通过重T2加权（hT2W）-3D液体衰减反转恢复（FLAIR）序列进行评估。通常进行单侧IT注射。我们采用了一种方法，即同时向一只耳朵静脉内注射造影剂（IV侧），向另一只耳朵同时进行静脉内和鼓室内注射（IT + IV侧），以评估10例梅尼埃病患者的EH。然后，我们将通过从hT2W-3D-FLAIR中减去磁共振脑池造影获得的HYDROPS2图像与通过3D-真实IR获得的图像进行比较，发现我们可以在HYDROPS2图像上评估所有耳朵的EH，但在3D-真实IR图像上仅能评估IT + IV侧的EH。
