基于双能计算机断层扫描的虚拟单色成像中碘含量及亨氏单位值定量的准确性：双层计算机断层扫描与快速千伏切换计算机断层扫描的比较
Accuracy of Quantification of Iodine and Hounsfield Unit Values on Virtual Monochromatic Imaging Using Dual-Energy Computed Tomography: Comparison of Dual-Layer Computed Tomography With Fast Kilovolt-Switching Computed Tomography.
作者信息
Washio Hayate, Ohira Shingo, Karino Tsukasa, Nitta Yuya, Hayashi Masaaki, Miyazaki Masayoshi, Teshima Teruki
机构信息
Department of Radiology, Hyogo Yoka Hospital, Hyogo, Japan.
出版信息
J Comput Assist Tomogr. 2018 Nov/Dec;42(6):965-971. doi: 10.1097/RCT.0000000000000798.
OBJECTIVE
The aim of the study was to compare the accuracy of quantification of iodine and Hounsfield unit (HU) values on virtual monochromatic imaging (VMI) using dual-layer computed tomography (DLCT) and fast kilovolt-switching computed tomography (FKSCT).
MATERIALS AND METHODS
This study was performed in 2 phantoms (large and small) using 16 rods representing different materials (iodine, calcium, blood, and adipose tissue) with different dimensions and concentrations. The absolute percentage errors (absolute ratio of measurement error to true iodine concentration) for iodine concentration and HU value on VMI at 50, 70, and 100 keV were compared between DLCT and FKSCT. The Mann-Whitney U test was used to assess statistical significance.
RESULTS
Overall, the absolute percentage errors for iodine concentration and HU value on VMI were smaller for DLCT than for FKSCT.
CONCLUSIONS
Overall, the accuracy of iodine and HU values was higher for DLCT than for FKSCT.
目的
本研究旨在比较使用双层计算机断层扫描（DLCT）和快速千伏切换计算机断层扫描（FKSCT）在虚拟单色成像（VMI）上碘和亨氏单位（HU）值定量的准确性。
材料与方法
本研究使用2个模型（大模型和小模型），16根代表不同材料（碘、钙、血液和脂肪组织）且具有不同尺寸和浓度的棒。比较了DLCT和FKSCT在50、70和100 keV时VMI上碘浓度和HU值的绝对百分比误差（测量误差与真实碘浓度的绝对比值）。采用曼-惠特尼U检验评估统计学意义。
结果
总体而言，DLCT在VMI上碘浓度和HU值的绝对百分比误差小于FKSCT。
结论
总体而言，DLCT在碘和HU值方面的准确性高于FKSCT。
Zotero 插件