Shinji Naganawa1, Tsutomu Nakashima. 1. Department of Radiology, Nagoya University School of Medicine, 65, Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
Abstract
CONCLUSION: Recent advances in clinical MR imagers, such as the 3-Tesla, multi-channel phased-array coil and novel pulse sequences, allow the evaluation of subtle alterations in the inner ear fluid environments and breakdown of the blood-labyrinthine barrier. Intratympanic injection of Gd-DTPA allows the imaging detection of endolymphatic hydrops in patients. OBJECTIVES: To describe the current status of inner ear MRI and future directions for imaging. MATERIALS AND METHODS: Based on our experiences and literature research, a brief review of the history and recent developments of inner ear MRI is presented. RESULTS: The 3D-FLAIR technique can detect abnormalities that could not be visualized previously in many inner ear diseases, such as sudden deafness, otosclerosis, lupus erythematosus, mumps, and Ramsay-Hunt syndrome. Imaging techniques, indications, and findings for the visualization of endolymphatic hydrops after intratympanic injection of Gd-DTPA are also discussed. This procedure enabled the visualization of endolymphatic hydrops in vivo. Newly developed 3D-real IR techniques and utilities of 32 channel coil are also presented.
CONCLUSION: Recent advances in clinical MR imagers, such as the 3-Tesla, multi-channel phased-array coil and novel pulse sequences, allow the evaluation of subtle alterations in the inner ear fluid environments and breakdown of the blood-labyrinthine barrier. Intratympanic injection of Gd-DTPA allows the imaging detection of endolymphatic hydrops in patients. OBJECTIVES: To describe the current status of inner ear MRI and future directions for imaging. MATERIALS AND METHODS: Based on our experiences and literature research, a brief review of the history and recent developments of inner ear MRI is presented. RESULTS: The 3D-FLAIR technique can detect abnormalities that could not be visualized previously in many inner ear diseases, such as sudden deafness, otosclerosis, lupus erythematosus, mumps, and Ramsay-Hunt syndrome. Imaging techniques, indications, and findings for the visualization of endolymphatic hydrops after intratympanic injection of Gd-DTPA are also discussed. This procedure enabled the visualization of endolymphatic hydrops in vivo. Newly developed 3D-real IR techniques and utilities of 32 channel coil are also presented.
Authors: A Vassiliou; P V Vlastarakos; P Maragoudakis; D Candiloros; T P Nikolopoulos Journal: Ann Indian Acad Neurol Date: 2011-01 Impact factor: 1.383
Authors: Johann Le Floc'h; Winston Tan; Ravindra S Telang; Srdjan M Vlajkovic; Alfred Nuttall; William D Rooney; Beau Pontré; Peter R Thorne Journal: J Magn Reson Imaging Date: 2013-04-15 Impact factor: 4.813