The spatial pulse length will increase with all of the following except:

Ultrasound pulses contain a range of frequencies called the ____________.

The near zone length is determined by the size and the _________ of the element.

Which of the following will improve axial and lateral resolution?

Which of the following transducers would be most useful for imaging superficial structures?

Huygen’s principle describes

Which of the following transducers would be most useful for good penetration on an obese patient?

If an echo returns 104 µs after a pulse was emitted, at what depth is the reflector?

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The impedance of the matching layer is __________________.