耳硬化患者骨迷路高分辨率CT密度观察.pdf
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·临床研究·
耳硬化患者骨迷路高分辨率CT密度的观察
朱美美沙炎+陈兵
【摘要】 目的探讨高分辨率颞骨CT密度在诊断耳硬化中的作用。方法分析手术确诊的耳硬化患者
34例(34耳,病例组)和同期确诊的周围性面瘫患者33例(对侧正常耳33耳,对照组)的颞骨CT扫描和纯音
听阈测试结果。在0.75mm层厚颞骨CT轴位层面的耳囊周围,手动设置7个兴趣区,测量平均CT值。根据
CT表现将耳硬化病例分为2个亚组:A组,CT显示无病理变化;B组,耳蜗区骨密度降低。比较各兴趣区病例
组与对照组平均CT值的差异,分析病例组CT表现与纯音测听结果的关系。结果卵圆窗后缘和卵圆窗前缘
这两个兴趣区,病例组平均CT值明显低于对照组(卵圆窗后缘t=一2.030,P=0.046;卵圆窗前缘Z=
例(25%),混合性聋3例(75%)。结论耳硬化患者卵圆窗周围骨质CT密度可能发生改变。(中国眼耳鼻喉
科杂志,2009,9:218-220)
【关键词】耳硬化;体层摄影术,x线计算机;光密度测定法;测听法
ObservationofOS蛐OIIS in otosclerosis
labyrinthhigh—resolutioncomputedtomographydensitometrypafien缸with
Noseand
ZHU Ear Throat
Mei—mei,SHAYan。,CHENBing.DepartmentofDc砒iⅢ也川m酽lf噌y,Eye Hospital,
Fudan
University,Shanghai200031,China
author:CHENBing,Email:b_ehen66@yahoo.eom.ca
Corresponding
To thevalueofhi.gh-resolution in
【Abstract】Objectiveinvestigate computedtomo伊aphy(CT)densitometry
the ofotosclerosis.MethodsCT and tonetestresultsof34 otosclerosis
scanning ear8,the
diagnosis pure patients(34
confirmedotosclerosisand33 normal control facial
patients(33 ears,the pa-
group)withsⅢgieally opposite group)with
attheganle were of set
ralysisdiagnosed period analyzedretrospectively.Sevenre舀ominterest(ROI)weremanually
aroundthe theaxial of0.75一舢thick.Themean oftheseven
otic on alice Hounsfieldunit(HU)valuesregions
capsIlle
weremeasured.BasedontheCT ear8withotesclerosiswEqeclassifiedinto A(no CTfind-
imaging
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