Table 1 Patient Characteristics and Contrast used. There was no difference in the body mass index, body surface area or amount of Definity used between the sonographer driven protocol (Pre) and following the protocol to allow sonographer administration of echocardiography image enhancer (Post). However, there was less Optison used in sonographer administration protocol, p = 0.03

From: Improved efficiency and diagnostic utility of inpatient transthoracic echocardiography following implementation of a sonographer-initiated perflutren-based contrast administration protocol