Blog

For color flow Doppler, flow that is perpendicular to the US beam will be represented by the color: 

Which artifact is demonstrated on the image (yellow arrows)?

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

If you obtain a peak velocity of 60cm/s with the Doppler correction angle set to 60 degrees and you change it to 0 degrees, what is the displayed velocity in the vessel?

If the input power is 0.05mW and the output power is 500mW, what is the gain?

What should be done to adjust and improve the color displayed on the attached image?

A new ultrasound (US) study is performed and compared to a gold standard. 200 patients were imaged. If the gold standard said that it found 100 studies were positive, and of that 100, US said that 90 studies were positive. The gold standard said that 100 studies were negative. Which of the following represent the specificity of the US test?

What is the best way to adjust the console controls to eliminate the Doppler artifact?

Which of the following acoustic artifacts is demonstrated on the image?

In order to improve spatial resolution and the signal-to-noise ratio, ______________________ uses frequency modulation to manipulate the transmitted beam.