You have examined a transducer by placing cellophane tape around the outside edges of the transducer and sealing it enough to fill with water, and then putting water on the transducer. You then turned the unit on, increased the intensity of the unit to about 1.5W/cm²,and noticed that there was only a small percentage of the surface of the water that was disturbed when you looked at it from the top. What might this indicate?

Question

Quizplus · Accepted Answer

This indicates that the effective radiating area (ERA) of the unit was poor, meaning that the ultrasound waves were not being evenly distributed across the entire surface of the transducer. This can lead to uneven delivery of ultrasound therapy.

You Have Examined a Transducer by Placing Cellophane Tape Around