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对于临床3D脑MRI协议的回顾性运动校正和重建,使用参考对比度

Gabrio Rizzuti^1,2, Tim Schakel², Niek R F Huttinga²

¹Utrecht University, Heidelberglaan 8, 3584 CS, Utrecht, The Netherlands.

Magma (New York, N.Y.)

|May 17, 2024

概括

本研究介绍了用于磁共振成像 (MRI) 扫描的参考引导的回顾性运动校正技术. 该方法有效地减少了使用无运动扫描的腐败MRI对比的运动文物.

科学领域:

医疗成像医学成像
放射学放射学是指放射学
生物医学工程生物医学工程

背景情况:

磁共振成像 (MRI) 会议涉及连续的数据采集,增加了患者运动的可能性.
运动工件通常会降低某些MRI对比度的图像质量,需要重复扫描或导致诊断挑战.

研究的目的:

开发和评估一个以参考为导向的MRI的回顾性运动校正方案.
为了利用无运动扫描来纠正损坏的MRI对比度中的文物,而不需要重新扫描.

主要方法:

这项研究使用了对运动校正的通用刚性注册程序.
在1.5特斯拉的临床3D大脑MRI协议上进行了实验,采用卡特西安采样.
对三名健康志愿者进行了控制运动实验,他们处于不同的运动水平.

主要成果:

提出的运动校正方法成功地改善了损坏的MRI扫描.
图像质量指标,峰值信号噪声比 (PSNR) 和结构相似度指数 (SSIM) 测量,显示随着运动复杂度的增加,图像质量仅略有下降.

结论:

以参考为导向的回顾性运动校正方案在受控实验中显示出积极的结果.
需要对患者数据进行进一步的验证,以确认其临床适用性和放射性接受性.

关键词:

脑部成像脑部成像脑部成像运动纠正运动纠正三维成像三维成像技术

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Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...