ARDMS SPI Exam Review TEST 7

August 18, 2017 By Rana Waqar Leave a Comment

1. Which of the following is true of the diameter of the sound beam in the Fresnel zone?
- a. It increases
- b. It decreases
- c. It does not change
- d. It is unpredictable
2. Which resolution is best in clinical imaging?
- a. Axial
- b. Lateral
- c. Temporal
- d. Slice thickness
3. Which of the following will increase the near zone length?
- a. Large crystal diameter, low frequency
- b. Small crystal diameter, low frequency
- c. Large crystal diameter, high frequency
- d. Small crystal diameter, high frequency
4. Which of the following will decrease beam divergence in the far field?
- a. Large crystal diameter, low frequency
- b. Small crystal diameter, low frequency
- c. Large crystal diameter, high frequency
- d. Small crystal diameter, high frequency
5. Imaging transducers have:
- a. Low quality factors, wide bandwidths
- b. High quality factors, narrow bandwidths
- c. Low quality factors, narrow bandwidths
- d. High quality factors, wide bandwidths
6. Damping material produces all of the following except:
- a. Decreased sensitivity
- b. Increased SPL
- c. Wide bandwidths
- d. Low quality factors
7. Which of the following electrical patterns produces electronic focusing of the ultrasound beam?
- a. Curve
- b. Slope
- c. Width
- d. Length
8. In an unfocused, single-element transducer, the focal point of the sound beam measures how much of the total beam width?
- a. One fourth
- b. One third
- c. One half
- d. Equal
9. Which of the following facilitates the transmission of sound from the element into the patient’s skin?
- a. Damping material
- b. Matching layer
- c. Tungsten covering
- d. Focusing material
10. Which of the following is the range of frequencies present within the beam?
- a. Quality factor
- b. Bandwidth
- c. Array
- d. Wavefront

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