快速的腹部磁共振弹性学,同时编码三维位移
Daiki Ito1, Tomokazu Numano2, Tetsushi Habe3
1Office of Radiation Technology, Keio University Hospital, 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10, Higashiogu, Arakawa-ku, Tokyo 116-8551, Japan.
Magnetic resonance imaging
|February 15, 2024
概括
一种名为short-SLIM的新方法显著减少了3D磁共振弹性学 (MRE) 的获取时间,减少了2.25倍. 这种更快的方法保持了准确性,改善了剪切模量估计,并最大限度地减少了患者的运动工件.
科学领域:
- 医疗成像医学成像
- 生物物理学的生物物理.
- 磁共振成像是一种磁共振成像技术.
背景情况:
- 三维 (3D) 磁共振弹性图 (MRE) 提供了比2D MRE更高的精度,但由于采集时间较长而受到影响.
- 在3D MRE中更长的扫描持续时间可能会导致患者的运动,这可能会损害剪切模量估计的准确性.
研究的目的:
- 引入和评估一种新的短样间调制 (Short-SLIM) 技术,以加速腹部3D MRE获取.
- 评估短SLIM在缩短扫描时间的性能,同时保持MRE测量的准确性与传统方法相比.
主要方法:
- 这项研究使用了两项幻影研究 (同质和嵌入棒) 和三名志愿者的体内肝脏成像.
- 传统的旋回回声回声平面 (SE-EPI) MRE,传统的SLIM和拟议的短SLIM技术之间的性能进行了比较.
- 定量分析包括测量振幅和剪切模量,评估强度降低相对噪声比,并评估复杂的波纹性能.
主要成果:
- 幻影研究表明,传统的MRE和短SLIM之间平均振幅和剪模的差异很小,即使振动功率不同.
- 棒嵌入式幻影中的弹性图形和平均切割模量在传统SLIM和短SLIM中保持一致.
- 在体内肝脏成像显示,不同的采集技术之间只有很小的差异,表明可比的诊断质量.
结论:
- 短SLIM技术有效地将3D MRE获取时间缩短2.25倍,而不会牺牲准确度.
- 短SLIM提供了与传统方法相比的MRE结果,通过减轻患者运动来提高剪切模量估计的准确性.
- 这种加速方法有望提高腹部3DMRE的临床效用.
相关概念视频
01:24Magnetic Resonance Imaging
5.2K
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...
5.2K
01:25Ultrasound II: Endoscopic Ultrasound and FibroScan
106
Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Endoscopic Ultrasound (EUS):
106