摘要
近年来,随着MRI技术不断进步,5.0T MRI逐渐成为临床和科研领域关注的热点。与传统1.5T及3.0T系统相比,5.0T平台信噪比呈超线性增加,某些组织特性如T1值、T2(T2*)值会发生变化,化学位移现象和磁敏感效应更明显,这为脂肪抑制、磁共振波谱及功能成像技术带来了新的应用前景。尽管5.0T系统在主磁场(B0)均匀性、射频场(B1)分布及比吸收率控制方面仍面临挑战,但通过硬件革新、序列优化及智能控制技术,以上问题已得到有效改善,在神经系统、骨关节、心脑血管、腹部等领域的常规成像和功能成像方面展现出巨大优势。本文结合最新研究进展,探讨5.0T MRI的技术突破、临床应用潜力及未来挑战。
In recent years,with the continuous advancement of MRI technology,5.0T MRI has gradually become a focal point of interest in both clinical and research fields.Compared with traditional 1.5T and 3.0T systems,the signal-to-noise ratio on the 5.0T platform increases superlinearly,while certain tissue properties such as T1 values,T2(T2*)values change,making chemical shift phenomena and susceptibility effects more pronounced.This brings new application prospects for fat suppression,magnetic resonance spectroscopy and functional imaging techniques.Despite the challenges that the 5.0T system faces in terms of main magnetic field(B0)uniformity,radiofrequency field(B1)distribution and specific absorption rate control,these issues have been effectively mitigated through hardware innovation,sequence optimization and intelligent control technologies.The system shows significant advantages in conventional and functional imaging in areas such as the nervous system,bone joints,cardiovascular and cerebrovascular,and abdominal regions.This article discusses the technological breakthroughs,clinical application potential and future challenges of 5.0T MRI technology based on the latest research progress.
作者
刘建宪
甘洁
LIU Jianxian;GAN Jie(Department of Radiology,Shandong Provincial Third Hospital,Ji′nan 250031,China)
出处
《中国医学影像学杂志》
北大核心
2025年第7期689-693,共5页
Chinese Journal of Medical Imaging
基金
山东省医药卫生科技项目(202309011273)
山东省医药卫生科技项目(202209010957)。
关键词
磁共振成像
磁敏感加权成像
超高场强
信噪比
人工智能
医学成像
综述
Magnetic resonance imaging
Susceptibility weighted imaging
Ultra-high field
Signal-to-noise ratio
Artificial intelligence
Medical imaging
Review
