[CBCT与MSCT在前庭导水管显示能力的对比研究]
[Comparative study on the display ability of CBCT and MSCT in vestibular aqueduct].
作者信息
Wang Z, Yin G X, Zhang Z Y, Zhang P, Zhang J D, Zhang T T, Yang Z H, Wang Z C
机构信息
Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
出版信息
Zhonghua Yi Xue Za Zhi. 2018 Nov 6;98(41):3328-3331. doi: 10.3760/cma.j.issn.0376-2491.2018.41.007.
To compare the ability and visibility of cone-beam CT and MSCT in showing vestibular aqueduct. An experimental anatomical study which from June 2017 to August 2017 was performed on 76 temporal bones from 38 human cadavers with unknown clinical history. They all underwent CBCT and MSCT and all images were unified and standardized. The standard position was oblique sagital reconstruction.The length of the vestibular aqueduct, the midpoint and the external aperture width were measured on the standard position. The internal aperture, isthmus and proximal portion of the vestibular aqueduct on the images of the two kinds of equipment were evaluated. The measurement results of the two devices and image quality of the vestibular aqueduct were compared. There was no significant statistical difference between the results of the measurement of CBCT and MSCT(>0.05). In CBCT images, the total display rate of internal aperture was 77.6%(59/76), and the clearly display rate was 81.4%(48/59). The total display rate of the proximal portion of vestibular aqueduct was 57.0%(45/79), and the clearly display rate was 60.0%(27/45). The total display rate of isthmus of vestibular aqueduct was 59.2%(45/76), and the clearly display rate was 60.0%(27/45). In MSCT images, the total display rate of was 46.1%(35/76), and the clearly display rate was 60.0%(21/35). The total display rate of 5 of the proximal portion of vestibular aqueduct was 56.6%(43/76), the clearly display rate was 46.5%(20/43). The total display rate of isthmus of vestibular aqueduct was 68.4%(52/76), and the clear display rate 36.5%(19/52). There was significant statistical difference between the CBCT and the MSCT (<0.05) in displaying of internal aperture of vestibular aqueduct. Compared with MSCT, the image of vestibular aqueduct obtained by CBCT can meet the diagnostic requirements and CBCT have better visibility in showing some subtle structures of vestibular aqueduct than MSCT.
比较锥形束CT（CBCT）和多层螺旋CT（MSCT）显示前庭导水管的能力及清晰度。于2017年6月至2017年8月对38具无已知临床病史的人类尸体的76块颞骨进行了一项实验解剖学研究。所有颞骨均接受了CBCT和MSCT检查，且所有图像均进行了统一和标准化处理。标准体位为斜矢状面重建。在标准体位上测量前庭导水管的长度、中点及外口宽度。对两种设备图像上前庭导水管的内口、峡部及近段进行评估。比较两种设备的测量结果及前庭导水管的图像质量。CBCT和MSCT的测量结果之间无显著统计学差异（>0.05）。在CBCT图像中，内口的总显示率为77.6%（59/76），清晰显示率为81.4%（48/59）。前庭导水管近段的总显示率为57.0%（45/79），清晰显示率为60.0%（27/45）。前庭导水管峡部的总显示率为59.2%（45/76），清晰显示率为60.0%（27/45）。在MSCT图像中，内口的总显示率为46.1%（35/76），清晰显示率为60.0%（21/35）。前庭导水管近段的总显示率为56.6%（43/76），清晰显示率为46.5%（20/43）。前庭导水管峡部的总显示率为68.4%（52/76），清晰显示率为36.5%（19/52）。CBCT和MSCT在前庭导水管内口的显示方面存在显著统计学差异（<0.05）。与MSCT相比，CBCT获得的前庭导水管图像能够满足诊断要求，且CBCT在前庭导水管一些细微结构的显示上比MSCT具有更好的清晰度。
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