Question

Given an ultrasound scanner with the following characteristics

- 5MHz phase array transducer

- 16-bit, 20 MHz AD converter

- 256 MB image memory (RAM)

- Operating mode: B mode acquisition; 3000 transmitted ultrasound pulses per second; image depth 10 cm; number of scan lines 60; sector angle 60º.

The ultrasound velocity is 1530 m/s.

(a) What is the image frequency (frame rate)?

(b) How long does it take to fill the complete image memory with data?

(c) How many images can maximally be stored in memory?

Answer 1