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Which of the following statement is true regarding a pulsed wave Doppler device?

What is the spatial pulse length of a four-cycle pulse with a wavelength of 0.1 mm?

Plasma is approximately 90% water.

Resistance to blood flow is primarily controlled by ___________

You are using a 5MHz transducer to perform pulsed wave Doppler on the carotid arteries. You change to a 7.5MHz continuous wave Doppler transducer to evaluate blood flow. How will this affect the propagation speed in the soft tissue of the neck?

In imaging, interference effects from acoustic reflections is known as _________.

What part of the ultrasound system is responsible for changing the element function back and forth from transmit to receive?

When you activate Harmonic imaging and add a focal zone to the field of view, which type of resolution improves the most?

What is most commonly used in Doppler spectral analysis waveform?

Elimination of clutter due to tissue and wall motion is accomplished with _________.