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What is the most appropriate procedure for obtaining a signed consent from a non-English speaking patient?

You are using a conventional linear array transducer to image this phantom image; two fluid-filled tubes are present. Why does the tube labeled “B” contain echoes, whereas the tube labeled “A” does not?  

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. What is the Sensitivity of ICAs Duplex?

What is the name of the transducer component labeled letter G?

All of the following correctly describe dynamic receive focusing, EXCEPT:

If the amplitude of a signal is halved, what effect on intensity occurs?

Which of the following terms can be used to describe the attached Doppler tracing?    

What determines the Pulse Repetition Frequency (PRF)?

During refraction, if the angle of wave transmission increases as it enters the second media, then the new media has ___________ propagation speed than the first media.

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