ARDMS SPI Exam Review TEST 13

October 14, 2017 By Rana Waqar Leave a Comment

1. Contrast resolution is:
- a. The ability to see differences in shades of gray
- b. The ability to display moving structures in real time
- c. The ability to identify two reflectors parallel to the beam
- d. The ability to identify two reflectors perpendicular to the beam
2. Which of the following occurs in the D-to-A converter?
- a. Preprocessing
- b. Postprocessing
- c. Conversion to binary
- d. Write zoom
3. In which mode is the strength of the reflector represented by the brightness of the dot?
- a. A-mode
- b. B-mode
- c. A and B
- d. None of the above
4. Which mode is interested in the movement of the reflectors along one scan line?
- a. A-mode
- b. B-mode
- c. M-mode
- d. C-mode
5. In M-mode imaging, what is along the x-axis?
- a. Depth
- b. Amplitude
- c. Intensity
- d. Time
6. The harmonic signal
- a. Is produced by the transducer
- b. Is produced by the patient
- c. Is of a stronger amplitude than the fundamental
- d. Has worse lateral resolution than the fundamental
7. When imaging in tissue harmonic imaging,
- a. The fundamental frequency is filtered out
- b. The fundamental beam’s frequency is increased
- c. The harmonic signal is filtered out
- d. There are more artifacts
8. A sound wave travels 26 s to a reflector. How far away is the reflector, assuming the medium is soft tissue?
- a. 0.5 cm
- b. 1.0 cm
- c. 2.0 cm
- d. 4.0 cm
9. A reflector is 20 mm away from the transducer. How long does it take for sound to get back to the transducer?
- a. 13 s
- b. 20 s
- c. 26 s
- d. 39 s
10. Which of the following is a technique used to reduce the presence of grating lobes?
- a. Apodization
- b. Tissue harmonics
- c. Subdicing
- d. All of the above

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