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Zhengyang Zhu^1,2,3, Xunwen Xue^1,2,3, Tang Tang^1,2,3

¹Department of Radiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.

Journal of magnetic resonance imaging : JMRI

|January 21, 2025

概括

一个高介电常数 (HDC) 显著提高3T胎儿MRI质量,通过增加信号与噪声比和对比与噪声比. 此外,HDC还降低了特定吸收率 (SAR),提高了临床实践中的安全性和诊断信心.

科学领域:

医疗成像医学成像
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

背景情况:

胎儿MRI中的高磁场对由于介电器件造成的图像质量退化提出了挑战.
增加的特定吸收率 (SAR) 是3T胎儿MRI的另一个重要的技术障碍.

研究的目的:

为了评估高介电常数 (HDC) 在提高图像质量的有效性.
评估HDC在减少3T胎儿MRI的SAR中的潜力.

主要方法:

一项前性研究,涉及168名孕妇参与者,接受3.0T胎儿MRI.
使用平衡稳定状态自由前行 (bSSFP) 和单次快速旋转回声 (SSFSE) 序列.
定量和定性图像质量评估,包括SNR,CNR和放射科医生评估,以及SAR测量.

主要成果:

使用HDC带来了SNR (高达258.76%) 和CNR (高达459.55%) 的显著增加.
整体图像质量,压电器件的减少和诊断信心显著改善.
全身总SAR显著降低 (32.60%对于bSSFP,15.40%对于SSFSE).

结论:

在临床环境中加入HDC可以提高胎儿MRI图像质量.
高强度电压有效减少介电器件和降低SAR,提高患者的安全.
HDC Pad是优化3T胎儿MRI协议的一个有希望的工具.

关键词:

胎儿核磁共振 (MRI) 检查结果高压电常数高压电常数图像质量图像质量图像质量特定的吸收率是什么

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