640层螺旋CT显示胆脂瘤型中耳炎听小骨的价值

发布时间：2018-06-27 08:02

本文选题：胆脂瘤 + 中耳　；参考：《中国医学影像学杂志》2014年01期

【摘要】：目的探讨胆脂瘤型中耳炎听小骨的640层螺旋CT轴位扫描及多平面重组(MPR)、容积再现(VR)表现,分析CT重建图像的应用价值。资料与方法经手术及病理证实的胆脂瘤型中耳炎患者29例(30耳),均采用轴位扫描、MPR及VR重建,并与手术结果对照。结果 29例患者(30耳)听小骨破坏部位共86个,砧镫关节脱位1耳。锤骨柄和砧骨短脚CT轴位扫描、MPR及VR的敏感度、特异度、阳性预测值、阴性预测值、符合率均为100.00%;锤骨头和砧骨体CT轴位扫描、MPR及VR的特异度及阳性预测值均为100.00%,锤骨头MPR的敏感度、阴性预测值及符合率分别为94.74%、91.67%及96.67%,砧骨体MPR的敏感度、阴性预测值及符合率分别为93.75%、93.33%及96.67%,均高于VR及轴位扫描。砧骨长脚的VR及镫骨的轴位扫描显示效果最佳,敏感度、特异度、阳性预测值、阴性预测值及符合率均为100.00%。结论 640层螺旋CT能准确地显示胆脂瘤型中耳炎听小骨的结构及破坏情况。VR在显示听小骨关节脱位方面有其独特优势。
[Abstract]:Objective to investigate the axial scan, multiplanar reconstruction (MPR) and volume rendering (VR) of 640 slice spiral CT in otitis media with cholesteatoma, and to analyze the value of CT reconstruction. Materials and methods 29 cases (30 ears) of cholesteatoma type otitis media proved by operation and pathology were reconstructed with MPR and VR. Results in 29 patients (30 ears), there were 86 sites of destruction of auditory bone and 1 ear of dislocation of the anvil joint. The sensitivity, specificity, positive predictive value, negative predictive value of MPR and VR in short foot CT scanning of malleus and incus were analyzed. The specificity and positive predictive value of MPR and VR were 100.000.The sensitivity of MPR, negative predictive value and coincidence rate of MPR were 91.67% and 96.67%, respectively, and the sensitivity of MPR in incus were 91.67% and 96.67%, respectively. The negative predictive value and coincidence rate were 93.75% and 96.67%, respectively, which were higher than VR and axial scan. The results of VR and stapes axial scan of the long foot of the incus were the best, the sensitivity, specificity, positive predictive value, negative predictive value and coincidence rate were 100.00000%. Conclusion 640 slice spiral CT can accurately display the structure and destruction of auditory ossicles in cholesteatoma otitis media. VR has its unique advantages in displaying the dislocation of auditory small bone joint.
【作者单位】：中国医科大学附属盛京医院放射科;沈阳市第四人民医院放射科;
【分类号】：R764.2

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