Objective To investigate the value of instantaneous wave intensity(WI) technic in respect of evaluating left ventricular function in patients with hyperthyroidism.Methods 46 patients with hyperthyroidism and 35 healthy controls were divided into two groups.The general material,conventional ultrasonic cardiogram material,WI parameters were obtained and compared,and the two groups had statistical differences for each index.Results General material:heart rate and systolic blood pressure of hyperthyroidism grou...