SPI

SPI practice questions, page 2 of 5, with answer review and explanations.

Question 6

The ability to resolve two separate reflectors perpendicular to the path of the beam describes which type of resolution?

  1. Axial
  2. Contrast
  3. Lateral
  4. Temporal

Question 7

Which target group in this image of a tissue-mimicking phantom is used for gray-scale evaluation?

  1. A
  2. B
  3. C
  4. D

Question 8

Which change can be made in order to avoid exceeding the Nyquist limit?

  1. Increase output power
  2. Decrease output power
  3. Increase pulse repetition frequency
  4. Decrease pulse repetition frequency

Question 9

Which change improves temporal resolution during color flow imaging?

  1. Increase field of view
  2. Decrease transmit frequency
  3. Decrease packet size
  4. Increase line density

Question 10

What determines the resonant frequency of a pulsed wave transducer?

  1. Element thickness and pulse repetition frequency
  2. Element diameter and speed of sound in element
  3. Element diameter and element thickness
  4. Element thickness and speed of sound in element