ARDMS SPI Exam Review TEST 15

October 14, 2017 By Rana Waqar Leave a Comment

1. Additional reflectors on the screen (with an array transducer) that are from extraneous sound waves off the primary axis of the beam are:
- a. Ring-down artifacts
- b. Edge shadows
- c. Side lobes
- d. Grating lobes
2. Sound travels through a large quantity of muscle tissue. The reflector will be displayed
- a. Too close to the transducer
- b. Too far away from the transducer
- c. In the correct location
- d. Sound does not travel through muscle tissue.
3. A shadow occurs when sound
- a. Travels through an area of decreased attenuation
- b. Travels through an area of increased attenuation
- c. Reflects off a weak attenuator
- d. Travels through a cystic structure
The appendix is attached to the:
- a.ileum
- b.cecum
- c.jejunum
- d.sigmoid colon
4. The echo information is taken from the memory and converted so it can be shown on the display in the:
- a. Beam former
- b. Receiver
- c. A-to-D converter
- d. D-to-A converter
5. Which older mode is still used today in ophthalmology?
- a. A-mode
- b. B-mode
- c. M-mode
- d. C-mode
6. Which part of the US machine does not affect the amount of energy entering the patient?
- a. Receiver
- b. Pulser
- c. Transmitter
- d. Beam former
7. An image with one bit of memory has how many shades of gray?
- a. None
- b. One
- c. Two
- d. Four
8. The part of the machine responsible for timing the reception of the pulses to determine their location is the:
- a. Beam former
- b. Scan converter
- c. Master synchronizer
- d. Display
9. A technique that averages out the frequencies used to make the image to improve contrast resolution and reduce speckle is:
- a. Spatial compounding
- b. Frequency compounding
- c. Coded excitation
- d. Tissue harmonics
10. Artifacts related to propagation speed occur because
- a. The machine can measure the propagation speed of the tissue
- b. The beam bounces off of strong reflectors
- c. The beam travels in a straight line
- d. The machine assumes 1540 m/s for all tissue

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