SPI Practice (ARDMS A & B) Actual Test Questions with Detailed Verified Answers / Already Graded A

SPI Practice (ARDMS A & B)
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1. What is dynamic aperture? C
A.aperture that varies with transmit frequency
B.aperture that decreases as a function of time
C.aperture that increases with increasing focal
length
D.aperture that changes as a function of frame
rate

2. to which acoustic variable is penetration depth A
inversely related?
A.frequency
B.wavelength
C.period
D.propagation speed

3. which imaging mode requires a broadband B
transducer?
A.continuous wave doppler
B.Pulsed wave doppler
C.color flow imaging
D.harmonic imaging

4. what is the doppler shift frequency? B
A.recieved ultrasound frequency multiplied by
the transmitted ultrasound frequency
B.difference between the transmitted ultra-
sound frequency and the received ultrasound
frequency
C.sum of the transmitted and received ultra-
sound frequencies
D.ratio of the transmitted ultrasound frequency
to the received ultrasound frequency


, SPI Practice (ARDMS A & B)
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5. what is the potential effect of increasing the A
pulse repetition frequency(PRF)?
A.Depth ambiguity
B.Decreased frame rate
C.Poor spatial resolution
D.Decreased penetration

6. what is an advantage of using pulsed wave B
doppler compared to continuous wave doppler?
A.higher echo sensitivity
B.ability to select sample depth
C.decreased display of aliasing
D.improved temporal resolution

7. what affects the beam width in the near field? D
A.Pulse repetition frequency
B.Pulse duration
C.Frame rate
D.Transducer aperture

8. what is the advantage of using pulsed-wave D
doppler versus continuous-wave doppler?
A.allows measurement of higher velocities
B.increases range ambiguity
C.reduces the potential for aliasing
D.provides depth specificity

9. which parameter is target group C evaluating D
based on the image?
A.dead zone
B.dynamic range




, SPI Practice (ARDMS A & B)
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C.axial resolution
D.Horizontal distance accuracy




10. In this image, which target group is used to eval- A
uate dead zone?




11. which ultrasound parameter directly affects an C
ultrasound beam's intensity?
A.TGC
B.operating frequency
C.Output power
D.Frame rate

12. the center frequency of a transducer depends D
primarily upon which characteristics of the crys-
tal?
A.width
B.length
C.spacing
D.thickness

13. which factor limits image frame rate? C
A.transducer operating frequency