Abstract:Objective: Analyze vestibular aqueduct MRI T2WI features of a group of patients affected with large vestibular aqueduct syndrome(LVAS). Methods: From Jan. 2011 to Dec. 2013, 150 patients affected LVAS had been diagnosed by means of temporal bone CT and brain MRI in our hospital. We analyzed MRI T2WI features of vestibular aqueduct area in all 297 ears. Results: Based on vestibular aqueduct T2WI features, endolymphatic duct and endolymphatic sac were divided into 2 types. Among all endolymphatic ducts and endolymphatic sacs, 10.8% were type Ⅰ with only hypointensity, while the rest 89.2% were type Ⅱ with both hypointensity and hyperintensity. Conclusion: There are different imaging features in vestibular aqueduct on MRI T2WI for LVAS.
邵永良,周永青,李晓明,杜昱平,张彦旭,高春梅. 大前庭水管综合征前庭水管区MRI T2WI影像学特征[J]. 中国临床医学影像杂志, 2016, 27(1): 3-5.
SHAO Yong-liang, ZHOU Yong-qing, LI Xiao-ming, DU Yu-ping, ZHANG Yan-xu, GAO Chun-mei. MRI T2WI features of vestibular aqueduct area with large vestibular aqueduct syndrome. JOURNAL OF CHINA MEDICAL IMAGING, 2016, 27(1): 3-5.
[1]黄选兆,汪吉宝,孔维佳. 实用耳鼻咽喉头颈外科学[M]. 2版. 北京:人民卫生出版社,2007:1003.
[2]方哲明,娄昕,兰兰,等. 大前庭导水管综合征内淋巴囊和前庭导水管MRI信号特征和临床意义[J]. 中华放射学杂志,2012,46(1):9-12.
[3]Harnsberger HR, Dahlen RT, Shelton C, et al. Advanced techniques in magnetic resonance imaging in the evaluation of the large endolymphatic duct and sac syndrome[J]. Laryngoscope, 1995, 105(10): 1037-1042.
[4]Davidson HC, Harnsberger HR, Lemmerling MM, et al. MR evaluation of vestibulocochlear anomalies associated with large endolymphatic duct and sac[J]. Am J Neuroradiol, 1999, 20(8): 1435-1441.
[5]Park JS, Hong HS, Lee JS, et al. Relationship of the Area Measurement of the Large Endolymphatic Duct and Sac Syndrome as well as the Clinical Symptoms with CT and MR Imaging Results[J]. J Korean Radiol Soc, 2008, 59(2): 75-81.
[6]Naganawa S, Koshikawa T, Iwayama E, et al. MR imaging of the enlarged endolymphatic duct and sac syndrome by use of a 3D fast asymmetric spin-echo sequence: volume and signal-intensity measurement of the endolymphatic duct and sac and area measurement of the cochlear modiolus[J]. Am J Neuroradiol, 2000, 21(9): 1664-1669.
[7]Campbell AP, Adunka OF, Zhou B, et al. Large vestibular aqueduct syndrome: anatomic and functional parameters[J]. Laryngoscope, 2011, 121(2): 352-357.
[8]Connor SE, Siddiqui A, O’Gorman R, et al. Magnetic resonance imaging features of large endolymphatic sac compartments: audiological and clinical correlates[J]. J Laryngol Otol, 2012, 126(6): 586-593.
[9]Spencer CR. The relationship between vestibular aqueduct diameter and sensorineural hearing loss is linear: a review and meta-analysis of large case series[J]. J Laryngol Otol, 2012, 126(11): 1086-1090.