Department of Second Ultrasound;
Cangzhou Central Hospital;
Department of Third Oncology;
Cangzhou Central Hospital;
Department of Gastroenterology;
Cangzhou Central Hospital;
Hepatic; neuroendocrine; neoplasm; Hepatic; neuroendocrine; tumor; Hepatic; neuroendocrine; carcinoma; B-ultrasound; Contrast-enhanced; ultrasound;