What will be the Doppler shift at a velocity of 6 m/sec if a velocity of 3 m/sec produces a shift of  4KHz?

Two structures that are 10 cm apart register as being 9 cm apart in a phantom. What distance would register for structures that are 20cm apart?

Multiple images of the same anatomic structure, placed deeper than the structure are called

A Doppler exam is performed with a 5MHz probe, and a PRF of 16KHz. Which of these Doppler shifts will cause aliasing?

The value of the Australian dollar (A$) today is $0.67. Yesterday, the value of the Australian dollar was $0.49. The Australian dollar ____ by ____ percent.

Contrast harmonics are all of these EXCEPT

Software __________ means that the software should not cause physical or economic damage in the event of system failure. Malicious users should not be  able to access or damage the system.

Grating lobes degrade:  a)contrast resolution b)sound penetration c)axial resolution d)transverse resolution

a)What does this color flow image demonstrate? a)aliasing b)flow reversal c) clutter d)ghosting  

For soft tissue, the approximate attenuation coefficient of a seven MHz probe  is  _________________