ARDMS SPI Exam Review TEST 7August 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 increasesb. It decreasesc. It does not changed. It is unpredictable2. Which resolution is best in clinical imaging?a. Axialb. Lateralc. Temporald. Slice thickness3. Which of the following will increase the near zone length?a. Large crystal diameter, low frequencyb. Small crystal diameter, low frequencyc. Large crystal diameter, high frequencyd. Small crystal diameter, high frequency4. Which of the following will decrease beam divergence in the far field?a. Large crystal diameter, low frequencyb. Small crystal diameter, low frequencyc. Large crystal diameter, high frequencyd. Small crystal diameter, high frequency5. Imaging transducers have:a. Low quality factors, wide bandwidthsb. High quality factors, narrow bandwidthsc. Low quality factors, narrow bandwidthsd. High quality factors, wide bandwidths6. Damping material produces all of the following except:a. Decreased sensitivityb. Increased SPLc. Wide bandwidthsd. Low quality factors7. Which of the following electrical patterns produces electronic focusing of the ultrasound beam?a. Curveb. Slopec. Widthd. Length8. In an unfocused, single-element transducer, the focal point of the sound beam measures how much of the total beam width?a. One fourthb. One thirdc. One halfd. Equal9. Which of the following facilitates the transmission of sound from the element into the patient’s skin?a. Damping materialb. Matching layerc. Tungsten coveringd. Focusing material10. Which of the following is the range of frequencies present within the beam?a. Quality factorb. Bandwidthc. Arrayd. Wavefront For More questions please join Our facebook group: https://www.facebook.com/groups/249298882082586/?ref=br_rs
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