Fig. 4

Participant data on previous ultrasound experience and use of the ultrasound devices. Four different graphics are shown, which are derived from the participant survey. At the top left, the number of ultrasound examinations performed independently prior to the practical year is displayed. Top right shows the use of the device during the practical year. The bottom left shows an overview of the voluntary courses attended. Bottom right illustrates the private usage of the device at home and during their freetime