320排640层CT在耳部畸形诊断中的临床应用价值探讨

Diagnosis of ear malformation by 320-detector row 640-slice CT scanner

目的:探讨320排640层动态容积CT在耳部畸形诊断上的临床应用价值。方法:收集2011-01～2012-01间行320排640层动态容积CT耳部检查先天性耳部病变患者31例共44耳,使用Toshiba Aquilion One动态容积CT机,采用160×0.5容积扫描模式。采集到的数据,常规进行1.0 mm横断面重建,高分辨率算法(sharp verysharp或bone)。结果:外耳道闭锁16例18耳,同时16例中伴有鼓室形态异常4耳,听小骨形态异常3耳,鼓室并听小骨形态异常1耳,患耳侧乳突呈板障型者2耳。外耳道狭窄4例5耳。内耳形态异常或畸形10例19耳。结论:320排640层动态容积CT先进的软硬件技术,评价内耳畸形可靠性进一步提升。

Objective：To evaluate the diagnostic value of 320-detector row 640-slice dynamic volume CT for ear malformation.Methods： Forty-four ears in 31 patients with congenital ear lesions were examined with Toshiba Aquilion One 320-detector row 640-slice dynamic volume CT system（160×0.5 volume scanning mode） from January 2011 to January 2012.The conventional 1.0-mm cross-section reconstruction was performed with high-resolution algorithm（sharp verysharp or bone） based on the collected data.Results：In 16 patients,external auditory canal atresia was found in 18 ears,tympanic cavity paramorphia in 4 ears,auditory ossicle paramorphia in 3 ears,both tympanic cavity and auditory ossicle paramorphia in 1 ear,and diploetic type mastoid in 2 patients.Five ears had external auditory canal stenosis in 4 patients.Ninteen ears had paramorphia or malformation of inner ear in 10 patients.Conclusion：The 320-detector row 640-slice dynamic volume CT scanner is an advanced and reliable diagnostic tool for ear malformation.