ALI acute lung injury ARDS acute respiratory distress syndrome CSSR chemical shift saturation recovery CT computed tomography DEX dexamethasone sodium phosphate FVC forced vital capacity Hct hematocrit LPS lipopolysaccharide Mem membrane tissue MLD mean lung density MRI magnetic resonance imaging MRS MR spectroscopy PFTs pulmonary function tests RBC red blood cell δ the air-capillary barrier thickness ω RBC 129Xe chemical shift in RBC 1 Introduction Acute lung injury (ALI) is a disorder of...