7 T磁共振成像(magnetic resonance imaging,MRI)作为超高场磁共振成像(ultrahigh field magnetic resonance imaging,UHF-MRI)的重要代表,凭借其超高的信噪比(signal-to-noise ratio,SNR)和空间分辨率,在神经系统、心血管、骨骼肌肉等多个系统的研究和临床应用中展现出独特优势.7 T在高分辨率结构成像、磁敏感加权成像(susceptibility-weighted imaging,SWI)、多核成像与波谱分析、血管的超微显示等方面取得了显著进展,为神经退行性疾病、肿瘤、骨关节疾病等的诊断和研究提供了重要工具.然而7 T MRI在射频场不均匀性、比吸收率(specific absorption rate,SAR)限制、成像伪影等方面仍面临技术挑战.本文对本次7 T组稿的系列研究论文和综述进行了概括,主要包括7 T MRI的核心优势、在特定系统中的应用进展,分析其临床应用面临的挑战,并探讨未来的研究方向,包括人工智能辅助的图像处理、临床应用标准和指南共识的制订等,以期为临床医生和影像学专家提供参考,促进7 T MRI的规范化应用和发展.
Clinical application advantages,challenges,and future prospects of 7 T MRI
7 T magnetic resonance imaging(7 T MRI),as a prominent representative of ultrahigh field magnetic resonance imaging(UHF-MRI),offers superior signal-to-noise ratio(SNR)and spatial resolution,providing unique advantages in the research and clinical applications across neurological,cardiovascular,musculoskeletal,and other systems.Significant progress has been made in high-resolution structural imaging,susceptibility-weighted imaging(SWI),multinuclear imaging and spectroscopy,and ultramicrovascular visualization,facilitating the diagnosis and study of neurodegenerative diseases,tumors,cardiac diseases,and joint disorders.However,challenges such as RF field inhomogeneity,specific absorption rate(SAR)limitations,and imaging artifacts persist.This review summarizes the core advantages of 7 T MRI,its application progress in specific systems,analyzes the challenges in clinical applications,and discusses future research directions,including artificial intelligence-assisted image processing and the establishment of clinical application standards and consensus guidelines,aiming to provide references for clinicians and radiologists,and to promote the standardized application and development of 7 T MRI.
7 T magnetic resonance imagingultra-high-field magnetic resonance imagingneurological systemcardiovascular systemmusculoskeletal systemartificial intelligenceclinical application standards
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