TY - Jour A2 - Veronese,Mattia Au - Li,Zongfang Au - Zhao,Wei Au - He,Bo Au - Koh,童三奥 - 李,延西AU - Zeng,Yizhen Au - Zhang,Zhu - Zhang,Zhu - Zhang,Zhu- 侯,Zujun Py - 2020 DA - 2020/11/23 Ti - 分布式参数模型通过动态对比度增强磁共振成像评估胶质瘤IDH突变状态SP - 8843084 VL - 2020 AB - 使用对比度增强的先前研究对胶质瘤同源脱氢酶(IDH)突变评估的成像表明,有希望不一致的结果,并且该研究通过使用先进的示踪动力学模型,分布式参数模型(DP)试图探讨该问题。回顾性地审查了在3.0 T扫描仪处使用动态对比度增强成像序列检查的五十五名胶质瘤患者。使用DP处理成像数据,产生以下参数:血流 F,渗透性表面积产品PS,间隙空间的分数体积 ve,血管内空间的分数体积 VP.和提取率 E.。将结果与TOFTS模型进行比较。用于评估IDH-突变体和IDH - 野生型胶质瘤之间模型参数的差异的威尔昔逊试验和杂波。Spearman相关性 R.采用探讨DP和TOFTS参数之间的关系。使用接收器操作特性(ROC)曲线分析和使用ROC曲线(AUC)下的区域进行评估诊断性能。结果表明,IDH-突变体胶质瘤在显着降低 F P.  = 0.018), PS ( P. < 0.001 ), VP. P. < 0.001 ), E. P. < 0.001 ), 和 ve P.  = 0.002) than IDH-wildtype gliomas. In differentiating IDH-mutant and IDH-wildtype gliomas, VP.具有最佳性能(AUC = 0.92),以及PS的AUC和 E.分别为0.82和0.80。相比之下,Tofts参数较低 K. trans P.  = 0.013) and ve P. < 0.001 )对于IDH-突变体胶质瘤。没有观察到显着差异 K.EP( P.  = 0.525). The AUCs of K. trans ve, 和 K.EP分别为0.69,0.79和0.55。Tofts衍生 ve表现出与DP衍生的强烈相关性 ve R. > 0.9, P. < 0.001 )。 K. trans表现出弱相关性 F R. < 0.3, P.  > 0.16) and a very weak correlation with PS ( R. < 0.06, P.  > 0.8), both of which were not statistically significant. The findings by DP revealed a tissue environment with lower vascularity, lower vessel permeability, and lower blood flow in IDH-mutant than in IDH-wildtype gliomas, being hostile to cellular differentiation of oncogenic effects in IDH-mutated gliomas, which might help to explain the better outcomes in IDH-mutated glioma patients than in glioma patients of IDH-wildtype. The advantage of DP over Tofts in glioma DCE data analysis was demonstrated in terms of clearer elucidation of tissue microenvironment and better performance in IDH mutation assessment. SN - 1555-4309 UR - https://doi.org/10.1155/2020/8843084 DO - 10.1155/2020/8843084 JF - Contrast Media & Molecular Imaging PB - Hindawi KW - ER -