Application Progress of Compressed Sensing in Sodium MRI
Sodium magnetic resonance imaging(MRI)is the only noninvasive imaging technique that enables the absolute spatial quantification of sodium concentration in living tissues,it can provide physiological and biochemical information related to cell viability and survival ability.Sodium MRI can detect biological information representing cell membrane integrity and vitality before macroscopic changes occur in tissue cells.It can also provide a basis for evaluating the efficacy of disease treatment and provide help for early diagnosis of disease,which is impossible to achieve by hydrogen MRI alone.However,compared to traditional hydrogen MRI,sodium MRI still faces a series of problems such as low signal to noise ratio and long data acquisition time even in ultra-high fields.Compressed sensing(CS)imaging technology can recover images with sparse characteristics in the known transform domain from the incoherent under sampled k-space data through nonlinear iterative reconstruction,which can greatly save the imaging time and improve the image quality,at present,CS has been applied to sodium MRI in various parts of the human body.This paper reviewed the current status and research progress of CS in sodium MRI in various parts of the human body,so as to promote the clinical application of CS imaging technology.
compressed sensingsodium MRIimage qualityimage time
国家科技期刊平台
NSTL
万方数据
