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结肠癌中瘤芽级别的区分使用在双能CT中噪声优化的虚拟单能图像

Changjiu He¹, Chuanyang Shao¹, Jieke Liu¹

¹Department of Radiology, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University of Electronic Science and Technology of China, Chengdu, China.

Abdominal radiology (New York)

|December 10, 2025

概括

来自双能CT (DECT) 的噪声优化虚拟单能图像 (VMI+) 有效预测结肠癌中的瘤芽 (TB) 级别. 与其他DECT参数相比,低keVVMI+ (40-60 keV) 显示出更高的诊断性能.

科学领域:

放射学放射学是一门学科.
在瘤学瘤学.
医疗成像医学成像

背景情况:

瘤芽 (结核病) 是结肠癌的一个关键预后因素.
精确的结核病分类对于治疗规划和预测患者的结果至关重要.
双能量CT (DECT) 提供了用于特征瘤的先进成像能力.

研究的目的:

评估来自DECT的噪声优化的虚拟单能图像 (VMI+) 在预测结肠癌中瘤芽 (TB) 度的有用性.
为了将VMI+在各种keV水平的诊断性能与TB分级的其他DECT定量参数进行比较.

主要方法:

对76名病理确诊结肠癌患者的对比增强DECT扫描的回顾性分析.
对对比度和噪声比率 (CNR),图像质量和损伤划分进行VMI+ (40-60 keV) 的评估.
对DECT参数的定量分析,包括VMI+衰减,度 (IC),正常化IC (NIC),电子密度 (Rho) 和有效原子数 (Zeff).
使用曲线下的面积 (AUC) 来区分低级/中级结核病与高级结核病的诊断性能评估.

主要成果:

低keV VMI+ (40,50和60keV) 在区分结核病等级 (AUC:0.825-0.843) 中显示出显著的诊断性能,表现优于IC,NIC,Rho和Zeff.
40 keV VMI+提供了最好的病变划分和最高的CNR.
与其他VMI+级别相比,60 keV VMI+显示出优越的整体图像质量.

结论:

DECT衍生低keV VMI+ (40-60 keV) 是预测结肠癌中瘤芽程度的宝贵工具.
40 keV VMI+ 提供最佳的 CNR 和病变划分,而 60 keV VMI+ 则为结核病分级提供更好的整体图像质量.

关键词:

结肠癌是什么意思结肠癌是什么意思双能CT (DECT) 是一种双能CT.图像质量图像质量噪音优化的虚拟单能图像 (VMI+)瘤的芽 (TB) 是指瘤的芽.

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