SLD 研究纳入标准：脂肪肝诊断及评估

a. Adults aged ≥18 years old; b. Conventional ultrasound with diffuse or heterogeneous fatty liver; c. Meet the diagnostic criteria for SLD (Steatotic Liver Disease) established by international experts: diagnosed with hepatic steatosis through imaging or liver histology. This includes metabolic dysfunction-associated steatotic liver disease (MASLD), MASLD with a history of heavy alcohol intake (MetALD), other specific causes such as alcohol-induced, drug-induced, monogenic inherited SLD, and idiopathic SLD; d. Those planning to undergo liver histopathology examination or MRI-PDFF assessment of the degree of hepatic steatosis; e. Agree to participate in this study and sign a written informed consent form.