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在多发性硬化症患者中,对非损伤性脑组织进行非常长的T2加权成像
Pietro Bontempi1, Sabrina Marangoni2, Lucia Cazzoletti3
1Department of Engineering for Innovation Medicine, University of Verona, Verona, Italy.
NMR in biomedicine
|August 1, 2024
概括
非常长的回声时间T2加权成像显示了与多发性硬化症疾病严重程度的显著相关性. 这种先进的MRI技术可以检测周血管空间的变化,为神经退行性和炎症性疾病提供新的见解.
科学领域:
- 放射学 放射学是一门学科.
- 神经成像是一种神经成像.
- 磁共振成像是一种磁共振成像技术.
背景情况:
- 多发性硬化症 (MS) 是一种慢性神经炎症和神经退行性疾病.
- 目前的MRI技术评估MS病变和缩,但可能无法完全捕捉疾病的进展.
- 具有非常长回声时间 (TE) 的T2加权成像尚未完全探索其在MS中的潜力.
研究的目的:
- 证明具有非常长回声时间 (TE > 300毫秒) 的T2加权成像可在MS等神经退行性/炎症性疾病中提供相关信息.
- 在MS患者中调查MRI信号强度 (SI) 在各种TE和临床放射学参数之间的相关性.
- 与传统的MRI指标相比,评估非常长的TE序列在描述疾病变异性的有用性.
主要方法:
- 20名患有复发性复发性多发性硬化症的患者接受了1.5 T MRI,包括3D FLAIR,3D T1加权和多回声序列 (TE = 10-320 ms).
- 确定了焦点病变 (FL),T1图像被细分为深灰质 (dGM),白质 (WM),T1低强度病变 (T1FL) 和dGM缩.
- 在不同试验期和临床放射学参数 (EDSS,疾病持续时间,年龄,T1FL,dGM缩) 的非损伤性dGM/WM中的平均SI之间进行了相关性和多变量线性回归分析.
主要成果:
- 对于所有临床放射学参数,观察到与TE增加的相关性显著性强化的趋势.
- 在EDSS,T1FL体积和dGM缩的较长试验期发现了显著的相关性 (p < 0.05).
- 在较短的TEs中,T1FL体积对EDSS变异性有意义;在非常长的TEs (~300 ms) 中,T2加权的SI显著解释了EDSS变异性.
结论:
- 非常长的TE T2加权成像与MS疾病严重程度和缩有显著的相关性.
- 这种技术可能反映了与自由水或扩张周血管空间 (PVS) 相关的变化.
- 非常长的TE T2权重代表了一个有希望的,尚未探索的MRI方法,用于神经退行性/炎症性疾病中的神经流体成像.
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