TABLE I.
Transducers Used, Their Nominal Center Frequencies, and Approximate Bandwidths Covered by the Transducers for Each System Are Summarized, Along With the Cutoff Criterion Used to Determine the Bandwidth.
Ultrasound system | Transducer | Nominal center frequency (MHz) |
Approximate combined bandwidth (MHz) |
Bandwidth cutoff criterion |
Data sampling rate (MHz) |
---|---|---|---|---|---|
Ultrasonix SonixRP | L9–4/38 | 5 | 2 to 8 | −15 dB | 40 |
L14–5/38 | 6 | ||||
Zonare Z.one | L8–3 | 7 | 4 to 9 | −20 dB | 50 |
L14–5sp | 10 | ||||
Siemens Acuson S2000 | 4V1 | 3 | 2 to 14 | 10 dB higher than noise floor | 40 |
9L4 | 6 | ||||
18L6 | 10 | ||||
Laboratory | 3.5f3 | 3.5 | 0.6 to 10.5 | −6 dB | 40 |
7.5f4 | 7.5 |