Which intensity is associated with tissue heating?

The angle between a U/S pulse and the boundary between two media is 90o.  What is this called?

All of these are true about this phantom EXCEPT

Solve and show all work:

Contrast harmonics are all of these EXCEPT

Assume Poland’s currency (the zloty) is worth $0.25 and the Japanese yen is worth $0.0072. What is the cross rate of the zloty with respect to the yen? That is, how many yen equal a zloty?

Assume that the bank’s bid quote for the Mexican peso is $0.134 and the ask price is $0.139. If you have Mexican pesos, what is the amount of pesos that you need to purchase $93,300?

The critical parameter to determine onset of vascular turbulence is 

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

What is the result of frequency compounding? a)Improved temporal resolution b)Improved signal to noise ratio and speckle reduction c)Reduced slice thickness averaging d)Reduced output power