A High Frequency Geometric Focusing Transducer Based on 1-3 Piezocomposite for Intravascular Ultrasound Imaging

Figure 4

The response of HGL-0085 hydrophone with special calibration in the range of 20~60 MHz. Measurement uncertainty: 20~40 MHz, 2.2 dB; 40~60 MHz, 3.0 dB.