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多排螺旋 CT 和锥形束 CT 检测颞下颌关节表面骨变化准确性的比较研究。

A comparative study of accuracy of detection of surface osseous changes in the temporomandibular joint using multidetector CT and cone beam CT.

机构信息

Maxillofacial Radiology Department, Dental Center Riyadh Medical Complex, Saudi Arabia.

出版信息

Dentomaxillofac Radiol. 2012 Mar;41(3):185-91. doi: 10.1259/dmfr/24985971.

Abstract

OBJECTIVE

The aim of this study was to assess the accuracy and reliability of cone beam CT (CBCT) images compared with multidetector CT (MDCT) images for the detection of surface osseous changes in temporomandibular joints (TMJs).

METHODS

Naked-eye inspection of 110 sites in 10 TMJs from 5 dry human skulls provided the gold standard. Two radiologists interpreted the images. Sensitivity, specificity and kappa statistics were used for analysis.

RESULTS

The sensitivities of both modalities were low and comparable whereas the specificities were high and comparable. Intraobserver reliabilities for CBCT (p=0.0005) and for MDCT (p=0.0001) showed significant agreement. Interobserver reliability was higher for CBCT than for MDCT.

CONCLUSION

CBCT and MDCT accuracy was comparable in detecting surface osseous changes with comparable intraobserver reliabilities. However, since CBCT requires less radiation exposure, it should be encouraged for imaging TMJ with suspected surface osseous changes.

摘要

目的

本研究旨在评估锥形束 CT(CBCT)图像与多排 CT(MDCT)图像在检测颞下颌关节(TMJ)表面骨变化方面的准确性和可靠性。

方法

对 5 个干燥人头颅骨的 10 个 TMJ 的 110 个部位进行肉眼观察,作为金标准。由两名放射科医生对图像进行解读。采用敏感性、特异性和kappa 统计进行分析。

结果

两种模态的敏感性均较低且相当,而特异性均较高且相当。CBCT(p=0.0005)和 MDCT(p=0.0001)的观察者内可靠性均显示出显著一致性。CBCT 的观察者间可靠性高于 MDCT。

结论

在检测表面骨变化方面,CBCT 和 MDCT 的准确性相当,且具有相当的观察者内可靠性。然而,由于 CBCT 辐射暴露较少,因此对于怀疑有表面骨变化的 TMJ 成像,应鼓励使用 CBCT。

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