Fig. 5
From: Low-frequency ultrasound for pulmonary hypertension therapy
A set up for measurement of the acoustic wave pressure generated by the ultrasonic transducer: 1—ultrasonic transducer; 2—hydrophone; 3—water bath; 4—ultrasound attenuating material; 5—power amplifier P200 (FLC Electronics AB, Sweden); 6—signal generator Agilent 33220A; 7—oscilloscope PicoScope 3424 (PicoTechnology Ltd., UK) 8—PC