The investigators aim to develop an advanced imaging platform, such as dynamic nuclear
polarization (DNP) 13C-MRI, MR fingerprinting (MRF) and MR Relaxometry, which combines with
traditional anatomical contrast CT, MRI and PET, and integrate blood/urine metabolomics
methods. A comprehensive strategy to thoroughly analyze the immune activation of spleen
pattern, microstructure, cell density, red blood cell iron content, immune cell glycolysis
and metabolic flow rate.