CAJ | 학술논문

目的：探讨双源CT虚拟平扫替代常规平扫在神经母细胞瘤应用的可行性。方法：16例神经母细胞瘤采用双源CT行常规平扫与140kV和80kV双能量增强扫描，将双能量增强扫描数据通过Liver VNC软件得到虚拟平扫图像。比较虚拟平扫与常规平扫的图像质量及钙化类型。比较肿瘤组织虚拟平扫与常规平扫的CT值，进行信度分析与Bland-Altman分析。结果：虚拟平扫图像质量略低于常规平扫，但差异无统计学意义。虚拟平扫显示团块钙化、颗粒钙化与常规平扫相同，显示细沙样钙化不如常规平扫。肿瘤组织的虚拟平扫CT值与常规平扫CT值内在一致性良好，两者平均差值为-2．8 H U。结论：双源CT虚拟平扫能替代常规平扫诊断钙化性神经母细胞瘤。
목적：탐토쌍원CT허의평소체대상규평소재신경모세포류응용적가행성。방법：16례신경모세포류채용쌍원CT행상규평소여140kV화80kV쌍능량증강소묘，장쌍능량증강소묘수거통과Liver VNC연건득도허의평소도상。비교허의평소여상규평소적도상질량급개화류형。비교종류조직허의평소여상규평소적CT치，진행신도분석여Bland-Altman분석。결과：허의평소도상질량략저우상규평소，단차이무통계학의의。허의평소현시단괴개화、과립개화여상규평소상동，현시세사양개화불여상규평소。종류조직적허의평소CT치여상규평소CT치내재일치성량호，량자평균차치위-2．8 H U。결론：쌍원CT허의평소능체대상규평소진단개화성신경모세포류。
Objective:To investigate the feasibility of virtual non-contrast image from the contrast-enhanced dual-en-ergy CT to replace the conventional non-contrast image in the application of neuroblastomas.Methods:Sixteen patients with histopathologically diagnosed neuroblastomas were examined by dual-energy CT.The real non-contrast scanning was ac-quired routinely before contrast injection.The iodine contrast scan was acquired using dual-energy levels,140kV and 80kV, and the virtual non-contrast image was obtained using liver VNC software.The image quality scores and calcifications on virtual non-contrast image were compared with those on conventional non-contrast image.The average CT values of the tumor tissue on virtual non-contrast image were compared with those on conventional non-contrast image.The cronbachαwas assessed by reliability analysis and the average difference was assessed by Bland-Altman analysis.Results:There was no significant difference on image quality scores between virtual non-contrast image and conventional non-contrast image.The massive calcifications and grain-like calcifications on virtual non-contrast image were the same as those on conventional non-contrast-image.The sand-like calcifications were not as well displayed on virtual non-contrast image as those on convention-al non-contrast image.The average CT values of the tumor tissue on virtual non-contrast image and those on real non-con-trast image showed good agreement and the average difference was -2.8HU.Conclusion:The dual-energy CT virtual non-contrast image can be used to replace the conventional non-contrast image in neuroblastomas with calcification.