合成MRI放松度与明显扩散系数在不同新辅助疗法反应的乳腺癌亚型之间的相关性
Wenhong Jiang1, Siyao Du1, Si Gao1
1Department of Radiology, The First Hospital of China Medical University, Shenyang, China.
Insights into imaging
|September 29, 2023
概括
合成MRI放松度和明显扩散系数 (ADC) 地图显示在评估乳腺癌方面具有互补作用. 相关性因亚型而异,PD和ADC地图对于新辅助疗法对三阴性乳腺癌反应特别有信息.
科学领域:
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
- 生物医学成像技术 生物医学成像技术
背景情况:
- 乳腺癌亚型对新辅助疗法 (NAT) 的反应不同.
- 合成MRI (syMRI) 放松度和明显扩散系数 (ADC) 映射是先进的成像技术.
- 了解syMRI和ADC之间的相关性对于治疗监测至关重要.
研究的目的:
- 在接受NAT的乳腺癌患者中调查syMRI放松计和ADC图之间的相关性.
- 评估这些相关性在各种乳腺癌亚型和治疗反应组之间如何不同.
主要方法:
- 对263名接受NAT治疗的乳腺癌患者的基线MRI数据的分析.
- 从T1,T2,PD和ADC地图计算直方图的特征.
- 在syMRI地图和ADC地图之间的相同特征的相关性分析.
- 对不同NAT响应组的特征进行比较,以评估歧视力.
主要成果:
- 在大多数syMRI和ADC特征之间观察到弱相关性 (r = -0.13-0.30).
- 在三阴性乳腺癌 (TNBC) 中,PD地图特征与病理完整反应 (pCR) 组的ADC有很强的相关性 (r = 0.60-0.86).
- 在光线HER2-阴性亚型中,T2地图特征与ADC的相关性高于T1和PD地图,T2的低百分位数和中位数显示了NAT反应的中等预测能力 (AUC 0.68-0.72).
结论:
- 在TNBC中ADC和PD图之间的相关性可以预测差异性的NAT反应.
- ADC和syMRI之间的相关性通常很弱,这表明它们在评估瘤微环境时具有互补的实用性.
- T2地图特征表明,在发光型HER2阴性乳腺癌中预测NAT反应的潜力.
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