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实时胎儿大脑和胎盘T2 *映射在0.55T的MRI

Jordina Aviles Verdera^1,2, Sara Neves Silva^1,2, Kelly M Payette^1,2,3

¹Early Life Imaging Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.

Magnetic resonance in medicine

|March 11, 2025

概括

这项研究引入了实时定量胎儿MRI,为个性化检查提供器官特定的T2*信息. 这种快速评估优化了MRI协议,有助于识别潜在的妊娠并发症.

科学领域:

医疗成像医学成像
量化MRI是指数量化的MRI.
胎儿的发育胎儿的发育

背景情况:

胎儿MRI检查需要优化,以提供个性化的患者护理.
定量成像为评估胎儿健康提供关键的器官特定信息.

研究的目的:

为胎盘和胎儿大脑组织提供实时,特定器官的定量T2*信息.
为了优化和个性化胎儿的磁共振成像 (MRI) 检查.

主要方法:

开发了一个低延迟处理设置,用于实时细分,T2* 拟合和百分点计算.
训练有素的nnU-Nets在广泛的胎儿大脑和胎盘数据集上进行自动细分.
导出了规范T2*曲线,并在50个胎儿MRI扫描上对该系统进行了前性验证.

主要成果:

在不到一分钟的时间内实现了实时T2*映射和百分点可用性,用于胎儿大脑和胎盘.
证明了强大的可重现性,具有较低的内部扫描平均T2*差异.
报告的高子系数 (胎儿大脑为0.96±0.01,胎盘为0.84±0.02) 表明精确的细分.

结论:

实时定量成像通过优化序列选择和潜在地降低回忆率来增强个性化的胎儿MRI.
实时评估T2*的能力为识别妊娠并发症提供了新的临床可能性.
未来的应用包括分析怀孕前和生长限制,并探索MR引导的胎儿干预.

关键词:

胎儿核磁共振 (MRI) 检查结果低成本的低成本的成本.低距离的低场.放松度计放松度计放松度计.

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