_______ is a Rayleigh scatterer

Resistance to blood flow is primarily controlled by ___________

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

With which type of probes, lobes artifacts may not occur?

Which statement is most accurate regarding resolution with a standard one-dimensional linear array transducer?

Two hundred (200) patients were examined by Bilateral Internal Carotid Arteries (ICA) Duplex Ultrasonography and Cerebral Angiography. Of these, 300 ICAs were correctly identified as being within normal limits, 80 ICAs were correctly identified as having significant stenosis, 15 ICAs were incorrectly considered to have significant stenosis by sonography and 5 ICAs were incorrectly considered to be within normal limits by sonography. The Sensitivity of ICAs Duplex is ________

Steering the color window to the right or to the left produces a(n) ____   frame rate.

Assuming line density is constant at two lines per degree, and you change from a 45 degree sector to a 90 degree sector, how many lines will be now be produced?

Data stored on videotape and computer discs can be erased by strong magnetic fields.

The relationship between the largest and the smallest signal amplitudes processed by a component of an US system is called the ___ and has units of ____.