背景:近年来,有越来越多的努力来利用低磁感应器件的潜在使用小于1T,称为低场MRI(LFMRI)。使用LFMRI系统,特别是在磁共振技术的早期。随着时间的推移,1.5和3T的磁感应值已成为临床设备的标准,主要是因为LFMRI系统的图像质量明显较低,例如,信噪比。近年来,由于人工智能图像处理的进步,有越来越多的努力,以利用低频MRI的潜在用途,诱导小于1T。这篇综述文章侧重于分析有关现代LFMRI系统的诊断功效的证据,以及LFMRI与1.5T系统在神经系统成像中的临床比较。肌肉骨骼系统,和胸部的器官,腹部,还有骨盆.
方法:MEDLINE的系统文献综述,PubMed,Scopus,WebofScience,和CENTRAL2018-2023年的数据库按照推荐的PRISMA方案进行.对数据进行了分析,以确定比较准确性的研究,与可用的1.5TMRI相比,LFMRI技术的可靠性和诊断性能。
结果:从选定的数据库中检索到总共1275篇出版物。仅选择符合所有预定义纳入标准的两篇文章进行详细评估。
结论:与1.5TMRI相比,关于LFMRI的准确性和诊断性能的研究数量有限。目前的证据不足以得出任何明确的见解。需要更多的科学研究才能得出有关LFMRI技术有效性的结论。
BACKGROUND: In recent years, there has been an increasing effort to take advantage of the potential use of low magnetic induction devices with less than 1 T, referred to as Low-Field MRI (LF MRI). LF MRI systems were used, especially in the early days of magnetic resonance technology. Over time, magnetic induction values of 1.5 and 3 T have become the standard for clinical devices, mainly because LF MRI systems were suffering from significantly lower quality of the images, e.g., signal-noise ratio. In recent years, due to advances in image processing with artificial intelligence, there has been an increasing effort to take advantage of the potential use of LF MRI with induction of less than 1 T. This overview article focuses on the analysis of the evidence concerning the diagnostic efficacy of modern LF MRI systems and the clinical comparison of LF MRI with 1.5 T systems in imaging the nervous system, musculoskeletal system, and organs of the chest, abdomen, and pelvis.
METHODS: A systematic literature review of MEDLINE, PubMed, Scopus, Web of Science, and CENTRAL databases for the period 2018-2023 was performed according to the recommended PRISMA protocol. Data were analysed to identify studies comparing the accuracy, reliability and diagnostic performance of LF MRI technology compared to available 1.5 T MRI.
RESULTS: A total of 1275 publications were retrieved from the selected databases. Only two articles meeting all predefined inclusion criteria were selected for detailed assessment.
CONCLUSIONS: A limited number of robust studies on the accuracy and diagnostic performance of LF MRI compared with 1.5 T MRI was available. The current evidence is not sufficient to draw any definitive insights. More scientific research is needed to make informed conclusions regarding the effectiveness of LF MRI technology.