A Deep Learning Model for Blood Volume Estimation From Multi-modal Ultrasound

Exclusion Criteria

• •Preoperative hemoglobin (Hb) \<10g/dl
• •Cardiac dysfunction (NYHA class III-IV), respiratory dysfunction (ATS class 2-4), history of liver and kidney dysfunction (such as transaminase / albumin / bilirubin abnormalities, hepatitis history, serum creatinine / urea nitrogen rise, etc.), nervous system abnormalities (those who cannot cooperate due to stroke or its sequelae, Alzheimer, etc.);
• •The ultrasonic display of inferior vena cava, internal jugular vein, subclavian vein or common carotid artery is extremely poor, venous thrombosis or anatomical abnormalities;
• •Multiple injury with chest, abdomen or brain;
• •Pregnant woman