多层螺旋CT对镫骨畸形的检出效度研究

目的 评估多层螺旋CT(MSCT)对镫骨畸形(SM)的检出能力.方法 回顾性分析2014年11月至2020年12月,经手术证实的32例SM患者的MSCT图像,以手术所见为金标准,基于轴位和冠状位的常规重组图像以及镫骨轴位图像,评估MSCT对SM的显示能力.结果 共纳入符合条件的SM 32例,其中镫骨前弓异常、镫骨后弓异...

Study on the Validity of Detecting Stapes Malformation with Multi-Slice Spiral CT

Objective To evaluate the ability of multi-slice spiral computed tomography(MSCT) in the detection of stapes malformation(SM). Methods The MSCT images of 32 patients with simple stapes malformation confirmed by surgery from November 2014 to December 2020 were retrospectively analyzed. The surgical findings were taken as the gold standard, and the ability of showing stapes deformity was evaluated based on standardized reconstruction images in transverse and coronal positions and axial images of stapes. Results A total of 32 sides of SM were included, among which 65.63%(21 sides) were abnormal stapes anterior crus, 59.38%(19 sides) were abnormal stapes posterior crus, 50.00%(16 sides) were abnormal stapes head, 43.75%(14 sides) were fixed stapes floor. The detection rate of stapes malformation was 50.00% in transverse and coronal position and 78.13% in axial position. The detection rate of stapes in axial position was higher than that in standardized reconstruction, and the difference was statistically significant(P=0.016).The detection rates of the abnormal stapes anterior crus, posterior crus and stapes head were 52.38%(11/21),52.63%(10/19) and 37.50%(6/16), respectively.Axialdetection rates of stapes were 90.48%(19/21),94.74%(18/19) and75. 00%( 12/16),respectively. There were significant differences in the detection rates of the above three structural abnormalities between the two methods( P = 0. 006,0. 003,0. 033). In 14 fixed stapes malformations,no positive results were found in routine recombination and axial position of stapes. Conclusion MSCT has limited ability to evaluate the floor of the stapes,and axial recombination of the stapes can improve the ability to detect the abnormal structures of the stapes.