Optimal combination periprosthetic vasculature visualization and metal artifact reduction by spectral computed tomography using virtual monoenergetic images in total hip arthroplasty

作者全名："Zhao, Jie; Cheng, Qiang; Liu, Chuan; Wang, Qiqi; Lv, Yuchan; Tang, Ziyi; Luo, Yuxi; Yang, Haitao"

作者地址："[Zhao, Jie; Liu, Chuan; Wang, Qiqi; Lv, Yuchan; Tang, Ziyi; Luo, Yuxi; Yang, Haitao] Chongqing Med Univ, Dept Psychiat, Affiliated Hosp 1, 1 Youyi Rd, Chongqing 400016, Peoples R China; [Cheng, Qiang] Chongqing Med Univ, Dept Orthoped, Affiliated Hosp 1, Chongqing, Peoples R China"

通信作者："Yang, HT (通讯作者)，Chongqing Med Univ, Dept Psychiat, Affiliated Hosp 1, 1 Youyi Rd, Chongqing 400016, Peoples R China."

来源：INSIGHTS INTO IMAGING

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:001088865200003

JCR分区：Q1

影响因子：4.1

年份：2023

卷号：14

期号：1

开始页：　

结束页：　

文献类型：Article

关键词：Energy spectrum CT; Virtual monoenergetic imaging; Metal artifact reduction; Periprosthetic vasculature

摘要："Objectives To investigate the optimal parameters of spectral CT for preferably visualizing the periprosthetic vasculature and metal artifact reduction (MAR) in total hip arthroplasty (THA).Methods A total of 34 THA of 30 patients were retrospectively included. Image reconstructions included conventional image (CI), CI combined with MAR (CIMAR), and virtual monoenergetic images (VMI) combined with MAR (VMIMAR) at 50-120 keV. The attenuation and standard deviation of the vessel and artifact, and the width of artifact were measured. Qualitative scoring was evaluated including the vascular contour, the extent of artifact, and overall diagnostic evaluation.Results The attenuation, noise of the vessel and artifact, and the width of artifact decreased as the energy level increased (p < 0.001). The downtrend was relatively flat at 80-120 keV, and the vascular attenuation dropped to 200 HU at 90 keV. The qualitative rating of vascular contour was significantly higher at CIMAR (3.47) and VMIMAR 60-80 keV (2.82-3.65) compared with CI (2.03) (p <= 0.029), and the highest score occurred at 70 and 80 keV (3.65 and 3.56). The score of the extent of artifact was higher at VMIMAR 80 keV than CIMAR (3.53 VS 3.12, p = 0.003). The score of the overall diagnostic evaluation was higher at VMIMAR 70 and 80 keV (3.32 and 3.53, respectively) than CIMAR (3.12) (p <= 0.035).Conclusion Eighty kiloelectron volts on VMIMAR, providing satisfactorily reduced metal artifacts and improved vascular visualization, can be an optimal recommended parameter of spectrum CT for the assessment of periprosthetic vasculature in THA patients."

基金机构："We recognize the contribution of Xiaomei Lu, an employee of Philips Healthcare, for her advice."

基金资助正文："We recognize the contribution of Xiaomei Lu, an employee of Philips Healthcare, for her advice."