You are scanning with a transducer whose elements are 0.3 mm thick and

whose propagation speed is 6 mm/microsecond. Each element has a width

(diameter) of 0.5 mm and the sequencer is selecting 15 of these elements

to form each group. Each pulse from this transducer contains 3 cycles.

Please calculate the following:

1. What is the spatial pulse length (SPL)?

2. What is the pulse duration (PD)?

3. What is the natural near zone length (NZL)?

4. At the natural NZL, how wide is the beam?

5. What is the attenuation coefficient (AC)?