时间强度概况和T1校正的动脉传输时间从多延迟伪连续ASL与变量-TR方案的成年类型扩散质瘤的特征
Koji Yamashita1, Makoto Obara2, Kazufumi Kikuchi3
1Department of Molecular and Imaging Diagnosis, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. yamashita.koji.659@m.kyushu-u.ac.jp.
Clinical neuroradiology
|January 20, 2026
概括
多延迟动脉旋转标签 (4D-ASL) 与T1校正的动脉过渡时间 (ATTT1corr) 和信号强度峰值时间可以区分成年类型的扩散性结质瘤. 这些先进的4D-ASL指标显示了改善质瘤诊断的前景.
科学领域:
- 神经成像是一种神经成像.
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
背景情况:
- 多延迟动脉旋转标签 (4D-ASL) 与单延迟ASL相比,提供了改进的结质瘤分级.
- 来自4D-ASL的动态信号强度 (SI) 变化和动脉传输时间 (ATT) 可能有助于区分成人类型的扩散性结质瘤.
- 脑瘤纵向放松时间 (T1) 可以影响ASL中的脑血流 (CBF) 和ATT测量.
研究的目的:
- 评估使用变量-TR方案和T1校正的ATT (ATTT1corr) 来评估4D-ASL的时间强度概况是否可以区分成年类型的扩散性结质瘤.
- 评估高级4D-ASL参数在质瘤亚型的诊断性能.
主要方法:
- 采集的4D-ASL数据采用了变量-TR方案,在14个组合中改变标签持续时间 (LD) 和标签后延迟 (PLD).
- 使用伪连续ASL与变量-TR方案进行T1测量.
- 从时间强度曲线中确定SI峰值时间,并在质瘤类型中比较SI峰值时间,ATT和ATTT1corr.
主要成果:
- 这项研究包括30名患者.
- 与IDH突变天体细胞瘤相比,在IDH野生型质瘤中,ATT和SI峰值时间明显较短 (p < 0.01).
- 在IDH突变天体细胞瘤中,ATTT1corr显著长于其他扩散性质瘤 (p < 0.0001).
结论:
- 使用变量-TR方案的4D-ASL,包括ATTT1corr和SI峰值时间,显示了改善成人类型扩散性结质瘤差异诊断的潜力.
- 这些先进的成像指标可能会提高区分不同类型质瘤亚型的能力.
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