Question

Calculate the frame rate (in Hz) for each of the following conditions:

1. P.R.F. = 4 kHz, lines per frame = 120, 1 focal zone:

2. P.R.P. = 200 us, lines per frame = 200, 2 focal zones:

3. Max. depth = 11 cm, lines per frame = 140, 2 focal zones: