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一个回收螺旋策略与半自动消除模糊的体积温度计

Steven P Allen¹, Sheng Chen², Kang Yan²

¹Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah, USA.

Magnetic resonance in medicine

|May 20, 2025

概括

使用回溯进出螺旋 (RIO) 的新型3D核磁共振测热技术,准确监测跨核磁共振引导聚焦超声波 (MRgFUS) 过程中的热量,提高患者的温度效率.

科学领域:

医疗成像医学成像
生物物理学的生物物理.
超声波技术超声波技术超声波技术

背景情况:

跨的MR指导聚焦超声波 (MRgFUS) 需要精确的温度监测.
现有的MRI温度计方法在准确性和效率方面存在局限性.

研究的目的:

开发和评估一种用于跨 MRgFUS 的新型3D MRI-温度计技术.
该技术旨在提高MRgFUS过程中温度监测的准确性和效率.

主要方法:

开发了一个3D梯度召回回声 (GRE) 序列,其中有回溯的进出 (RIO) 螺旋和消除模糊.
进行了布洛赫模拟,以分析温度估计的准确性.
该RIO序列在幻象和接受MRgFUS乳头切除术的四名患者中进行了测试.
性能与标准的二维卡特西安核磁共振-温度测序进行了比较.

主要成果:

RIO序列准确地估计了幽灵的峰值温度,与笛卡尔序列相比较.
在 silico 中,RIO 准确地估计了加热全宽度在半最大值 (FWHM);在幻影中,它显示了轻微的高估.
在RIO序列中,患者的温度效率提高了40%.
平均温度不确定性为RIO的1.32°C,而卡尔特斯序列的1.75°C.

结论:

3D RIO MRI-温度计策略有效地监测了跨 MRgFUS.US期间的焦点加热.
该技术的准确性和精度与现有的二维卡特西安方法相提并论.
在临床MRgFUS应用中,RIO显示了增强温度监测的潜力.

关键词:

在3D中,它是3D.在 MRgFUSUS 中.聚焦式超声波的使用卷入的螺旋螺旋回复.螺旋螺旋的螺旋是什么测温仪测温仪使用方法

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