详情页 - 首都医科大学附属北京同仁医院知识库

当前位置：首页 > 详情页

Scanning mode effects on relative electron density and effective atomic number accuracy in dual-layer spectral CT: A phantom study

文献详情

资源类型：

Pubmed体系：

作者：

机构： [1]Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China. [2]Department of Medical Engineering, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China. [3]CT Clinical Science, Philips Healthcare, Shenyang 110167, China. [4]Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050,China.

出处：

DOI：

ISSN：

关键词： spectral CT quantification accuracy relative electron density effective atomic number phantom

摘要：

To assess the accuracy of relative electron density (RED) and effective atomic number (EAN) measurements using dual-layer spectral CT (DLSCT) in axial and helical scanning modes.The CIRS 062M phantom was scanned with three collimation widths (16 × 0.625 mm, 32 × 0.625 mm, 64 × 0.625 mm) in axial mode and combined with two pitches (0.61 and 0.98) in helical mode. The RED and EAN were quantified using the IntelliSpace Portal, with absolute and relative errors calculated for each insert. Error metrics, including mean absolute error (MAE) and mean relative error (MRE), were subsequently derived over all the inserts. High accuracy was defined as the absolute error < 0.2. Statistical analysis was conducted using one-way ANOVA.In axial mode, the MAE for RED was within 0.01 and the MRE was within 2%; for EAN, the MAE was within 0.25 and the MRE was within 3%. In helical mode, the MAE for RED was within 0.02 and the MRE was within 2.5%; for EAN, the MAE was within 0.5 and the MRE was within 6%. Lung insert showed the highest deviation, while for all other inserts, the MAE was within 0.2 and the MRE was within 2% for EAN across both scanning modes. Smaller collimation widths in axial scanning showed lower relative errors for RED and EAN compared to helical scanning for bone and most of the soft inserts.DLSCT accurately estimates RED and EAN in both scanning modes, suitable for clinical quantitative tissue analysis, with the exception of lung tissue. Smaller collimation widths in axial scanning are recommended for enhanced measurement accuracy and stability.Copyright © 2025. Published by Elsevier GmbH.

基金：

语种：

PubmedID：

中科院(CAS)分区：

出版当年[2025]版：

大类 | 4 区医学

小类 | 4 区核医学

最新[2025]版：

大类 | 4 区医学

小类 | 4 区核医学

第一作者：

第一作者机构： [1]Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.

共同第一作者：

通讯作者：

推荐引用方式(GB/T 7714)：

APA：

MLA：

相关文献

[1]双能量ct电子密度和有效原子序数测量的研究进展 [2]Accuracy of Dual-layer Detector Spectral CT in Localizing Cholesteatoma: An Advanced Imaging Perspective [3]Multivendor Comparison of Quantification Accuracy of Iodine Concentration and Attenuation Measurements by Dual-Energy CT: A Phantom Study. [4]Multiparameter pancreatic parenchyma assessment using Dual-layer Spectral-detector CT for postpancreatectomy acute pancreatitis prediction [5]对比剂分次团注联合能量成像获得ctu和cta联合成像的应用研究 [6]对比剂分次团注联合能量成像获得CTU和CTA联合成像的应用研究 [7]双层探测器光谱CT临床应用中国专家共识（第一版） [8]宝石能谱ct多参数成像对脂肪肝定量测定的临床价值 [9]能谱ct单能量技术联合asir及asir-v改善胸部增强ct图像质量的研究 [10]An incremental registration method for endoscopic sinus and skull base surgery navigation: From phantom study to clinical trials