Advanced patient motion correction technology applicated in pediatric chest CT imaging
10.13929/j.issn.1003-3289.2025.05.024
- VernacularTitle:高级患者运动校正技术用于儿童胸部CT成像
- Author:
Xiaocong CHEN
1
;
Yi ZHAI
;
Hongping TIAN
;
Kun PU
;
Youqiang CHEN
;
Yilong HUANG
;
Yindeng LUO
Author Information
1. 重庆医科大学附属第二医院放射科,重庆 400010;重庆两江新区人民医院放射科,重庆 401121
- Publication Type:Journal Article
- Keywords:
child;
thorax;
tomography,X-ray computed;
artifacts;
algorithms
- From:
Chinese Journal of Medical Imaging Technology
2025;41(5):811-815
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of advanced patient motion correction(APMC)technology for improving imaging quality of low-dose pediatric chest CT.Methods Ninety-six children who received low-dose chest CT scan were retrospectively enrolled.CT images were reconstructed using full reconstruction technique(FULL)or APMC for both lung window and mediastinal window.Then the imaging qualities were subjectively evaluated according to image clarity,degree of motion artifacts,sharpness of structural edges and overall quality.The indexes of objective evaluation of imaging quality included the mean CT values of unit density pixel within ROI on lung window and mediastinal window,the standard deviation of CT values(SDCT)representing image noise,as well as signal-to-noise ratio(SNR).Sobel operator edge detection was performed on images,recording the mean gray level(G)and the standard deviation of gray value in Sobel(SDsobel)within ROI.Comparisons were made between FULL reconstruction and corrected images with APMC reconstruction in terms of subjective and objective evaluations,as well as parameters obtained from Sobel output images.Results Compared to FULL reconstruction,APMC corrected images showed reduced motion artifacts,improved edge structure sharpness and enhanced overall image quality(all P＜0.05),while there was no significant difference of image clarity(P＞0.05).Meanwhile,with APMC reconstructions,the mean CT values,SDCT on lung window and SDCT on mediastinal window increased(all P＜0.05),but there was no significant difference for the mean CT values on mediastinal window(P＞0.05),and SNR on both lung window and mediastinal window decreased(both P＜0.05).Besides,for Sobel output images,compared to FULL reconstruction,APMC reconstruction had increased G and SDsobel on both lung window and mediastinal window(all P＜0.05).Conclusion APMC technology applicated in low-dose chest CT scan of children could effectively reduce motion artifacts,improve edge clarity and imaging quality,hence enhance diagnostic sensitivity.
