If the PRF increases, the duty factor _______________

An artifact that is produced from interaction of the incident beam with a curved surface and results in an acoustic shadow is referred to as  __________________

When the length of a vessel is halved  _____________

Edge artifact (edge shadow) is mainly due to __________________

When employing a tissue-equivalent phantom, the depth at which echoes are no longer detected is an indicator of  ________________

If [ T ] is for time (µs), and [ f ] is for frequency (MHz), This equation (T=1/f) is used to calculate __________

The spatial pulse length will increase with increasing all of the following EXCEPT _________________

On the contrary to the arteries, veins can accommodate a large volume of blood flow with _____________ of its pressure

The two categories of energy that make up total fluid energy are  _____________________

A non-steady flow with acceleration and deceleration over the cardiac cycle is termed  _____________________