An increased resistive index with absent diastolic flow in the common carotid artery may signify which of the following? (Think about drawing this waveform – what does a waveform look like when it has a very high RI and NO diastolic flow? – think about a low RI waveform and now get rid of the diastolic flow component if it’s absent – does this increase the resistivity – what does this waveform tell you?)

Please select in order of anterior to posterior, the vessels identified in a normal Circle of Willis.

What is the best reason for the pulsatility and phasicity seen in the pulsed wave Doppler spectrum below?

If you visualize an Antegrade vessel when scanning in a subocciptal window for a TCD exam on a normal patient, what vessel are you likely visualizing?  

What is the cosine of a 90-degree angle?  

Find the product. Assume all variable exponents represent whole numbers. Show work on scrap paper or type work in box.(x – 3)(x2 + 3x + 9)

Write the number in decimal notation without the use of exponents. 6.977 × 106

Divide using long division. Show work on scrap paper or type work in box.(x2 – 15x + 54) ÷ (x + 4)

What is the first branch off of the Subclavian A bilaterally?

Why does Sir Gawain grieve about Christmas when he is walking through the frozen wilderness?