Figure 4

Proposal of a training program model for PSID users. A short period of 3 days basic teaching (ultrasound physics and biological effects, normal and pathologic cardiovascular anatomy, normal and pathologic blood flow dynamics) should be followed, after a free interval, by an in-hospital period (60 days, 3 days per week) for highly motivated operators (direct scan of standard echo views by PSID and visual assessment of at least 150 exams by PSID), in order to achieve the target level of competence.