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两对一组合形态和定量膝关节核磁共振,使用多功能轮旋回声平台

Teresa Lemainque¹, Nicola Pridöhl¹, Marc Huppertz¹

¹Department of Diagnostic and Interventional Radiology, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany.

Diagnostics (Basel, Switzerland)

|May 24, 2024

概括

新的MIXTURE MRI序列提供了同时的形态和定量膝关节成像. 这些更快的技术在临床上可行的扫描时间内提供诊断图像质量和有价值的定量图.

科学领域:

磁共振成像 (MRI) 是一种磁共振成像技术.
生物医学工程生物医学工程
放射学放射学是一门学科.

背景情况:

像T2和T1ρ映射这样的定量MRI技术对于膝关节病理学的评估至关重要.
这些技术的长时间获取阻碍了它们的临床应用.
需要高效的MRI方法,使其能够同时进行形态和定量成像.

研究的目的:

引入和评估MIXTURE (多交叉X准备的Turbo Spin-Echo与IntUitive RElaxometry) 平台,用于同时进行膝关节形态和定量成像.
与传统TSE序列相比,评估两种新型MIXTURE序列 (MIX1用于T2映射,MIX2用于T1ρ映射) 的诊断质量和定量性能.
为了确定MIXTURE序列是否可以在临床上可接受的扫描时间内实现诊断图像质量.

主要方法:

开发了两个MIXTURE序列:MIX1 (PD加权FS+T2映射,4:59分钟) 和MIX2 (T1加权+T1ρ映射,6:38分钟).
这些序列和参考2D/3DTSE序列是从10个人类尸体膝关节3.0T获得的.
图像对比度,对比度与噪声比率 (CNR) 和变化系数 (CV) 进行了定量评估.
放射科医生使用利克特尺度和顺序回归 (α = 0.01) 评估诊断质量.

主要成果:

MIX1和MIX2序列显示出与参考序列相比的诊断图像质量.
在MIXTURE和参考序列之间,定量参数 (对比度,CNR,CV) 在很大程度上相似.
开发的MIXTURE序列在临床上可行的获取时间内实现了形态成像和定量参数映射.

结论:

MIXTURE平台提供了一种多功能TSE方法,用于同时进行形态和定量膝关节成像.
MIX1和MIX2序列有效地提供诊断质量的图像和定量地图.
混合MRI通过提供额外的软组织组成和超结构洞察力,有望加强膝关节病理的临床评估.

关键词:

软骨软骨软骨是一种膝关节:膝关节关节是指膝关节的关节.磁共振成像技术的使用定量成像技术定量成像技术

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