Table 1.
Pulse type | Imaging pulse | ARF pulse |
---|---|---|
Plane wave | Plane wave | |
Center frequency = 4.5 MHz | Center frequency = 4.5 MHz | |
Detail | Pulse length = 1 cycle | Pulse length = 15 cycles |
PRFa = 12 Hz | PRF = 0.5, 2.5, 5 kHz | |
Peak-negative pressure = 12.3 kPa | Peak-negative pressure = 110.3 kPa | |
MIb = 0.006 | MI = 0.05 | |
Frame rate = 4 Hzc |
Average pulse repetition frequency
Mechanical index
Echo data from three consecutive imaging pulses was used to form one image. Frame rate = PRF / 3 = 4 Hz.