用新的成像生物标志物DDVD (扩散衍生血管密度) 评估腺瘤 perfusion:有希望的初步结果
Dian-Qi Yao1, Ann Dorothy King1, Rongli Zhang2
1Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, Hong Kong.
RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin
|March 13, 2025
概括
扩散衍生血管密度 (DDVD) 评估腺瘤 perfusion. 将DDVD与明显扩散系数 (ADC) 结合起来,有助于区分瘤类型,特别是 Warthin.
科学领域:
- 放射学和成像学 放射学和成像学
- 在瘤学瘤学.
- 生物标志物 生物标志物
背景情况:
- 状腺瘤需要准确的特征来进行有效的管理.
- 评估瘤血管性对于理解瘤生物学和指导治疗至关重要.
- 目前的输液成像技术可能在特异性和可访问性方面存在局限性.
研究的目的:
- 评估扩散衍生血管密度 (DDVD) 作为MRI生物标志物用于评估腺瘤 perfusion 的实用性.
- 为了比较DDVD和明显扩散系数 (ADC) 值在不同的腺瘤类型:多形腺瘤 (PA),Warthin的瘤 (WT) 和恶性瘤 (MT).
- 调查结合DDVD和ADC的潜力,以区分腺瘤.
主要方法:
- 在3.0T进行了MRI,获得了扩散加权图像,b值为0,20和1000秒/mm2.
- 使用b=0和b=20s/mm2的信号强度来计算DDVD.
- DDVDr (相对DDVD) 通过将瘤DDVD正常化为正常腺组织来确定.
- 使用b=0和1000秒/mm2.2的图像计算ADC值.
- 进行了系统的文献搜索,以将发现与现有的输液成像研究进行比较.
主要成果:
- 与正常组织相比,大多数状腺瘤表现出高血管性 (DDVDr > 1).
- 平均DDVDr值为PA的1.753±0.462,MT的2.731±2.254和WT的4.324±3.203,其中PA的平均值为1.753±0.462,MT的平均值为2.731±2.254和WT的平均值为4.324±3.203.
- 在PA中,ADC值为1.485±0.36 ×10−3 mm2/s,在MT中为0.969±0.194 ×10−3 mm2/s,在WT中为0.772±0.070 ×10−3 mm2/s.
- 沃廷的瘤显示了非常高的DDVDr和低的ADC,而多形腺瘤则具有中度高的DDVDr和非常高的ADC.
- 通过ADC和DDVDr的组合,在区分PA和WT方面表现出显著的潜力.
结论:
- DDVD是一种可行的扩散MRI生物标志物,用于评估状腺瘤 perfusion.
- 结合DDVD和ADC,有望改善腺瘤的组织特征.
- DDVD和ADC值为不同的状腺瘤亚型提供了不同的概况,有助于差异诊断.
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