儿童患者的面成像超短回声时间骨选择性MRI与CT相比

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Nada Kamona¹, Jinggang J Ng², Yohan Kim²

¹Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.

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|September 6, 2024

概括

超短回声时间 (UTE) MRI显示为儿科面成像有前途,与CT扫描提供良好的骨结构和测量协议,减少辐射暴露的担忧.

科学领域:

医疗成像医学成像
儿科放射学儿科放射学
生物医学工程生物医学工程

背景情况:

来自CT扫描的电离辐射是需要重复面成像的儿童的担忧.
低剂量CT协议可以减少,但不能消除暴露于辐射的风险.

研究的目的:

为了研究超短回声时间 (UTE) MRI序列的临床可行性,用于儿科面成像.
为了比较UTE MRI与CT的精度,以可视化骨结构和对儿童进行测量.

主要方法:

在3T时使用双射频,双回声UTE MRI序列对12名儿科患者 (8-18岁) 进行了测试.
生成明亮的骨头图像以增强骨的特异性.
与CT进行的定量比较包括子相似系数 (DSC),豪斯多夫距离 (HD95) 和使用林的一致性相关系数 (ρc) 的骨测量.

主要成果:

UTE MRI提供了高骨质对比度,抑制了软组织,并且清楚地将骨与空气鼻腔分开.
头骨面具重叠 (DSC) 和豪斯多夫距离 (HD95) 在UTE MRI和CT之间显示出良好的一致性 (中位数DSC=0.81,中位数HD95=1.87毫米).
测量测量显示出强烈的一致性 (ρc=0.90-0.99),平均绝对差异小于2mm.

结论:

在临床上,UTE MRI 序列对于小儿面成像是可行的.
UTE MRI显示在解决薄骨结构和头骨测量方面与CT有很好的一致性.
这种技术为重复CT扫描提供了潜在的替代方案,减少了儿科患者的辐射暴露.

关键词:

头骨面部头骨面部面部这就是为什么MRI是MRI.儿科儿科儿科辐射辐射辐射辐射辐射辐射辐射在UTE上,UTE就是UTE.

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