Questions and Answers | Complete Prep
Resource | A+ Pass Guaranteed
which signals are eliminated by the wall filter in a spectral Doppler display? -✓✓low
frequency, low amplitude
at minimum, what is required when documenting a pathology discovered during an
examination? -✓✓two images demonstrating the same pathology from different scan
planes
If the diameter of the sound beam is halved by focusing, what happens to the intensity -
✓✓Increased by 2 times
what is the most common cause of localized vertical nonuniformity in a real-time B-
mode image?
a) Improper TGC
b) Defective transducer elements
c) Faulty preamplifier
d) Malfunctioning scan converter -✓✓A
What is this artifact?
A. Shadowing
B. Side lobe
C. Reverberation
D. Mirror image -✓✓C
How do you fix this
A. Decrease the color scale
B. Decrease the color packet size
C. Increase the color packet size
D. Increase the color scale -✓✓D
Which way is the blood flowing?
A. Right to left
B. Left to right
C. Bidirectional
D. Cannot tell -✓✓B
-✓✓which imaging modality can provide the most accurate measurement of tumor
volume?
Color Doppler
B-mode
, A-mode
M-mode
-✓✓Which statement is most accurate regarding surface rendering three-dimensional
ultrasound imaging?
Improve accuracy of volume measurement
Minimizes effect of attenuation artifacts
Spatial resolution improve when using high resolution mesh
Future - based reconstruction Store full three- volume acquired
C -✓✓what is dynamic aperture?
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
A -✓✓to which acoustic variable is penetration depth inversely related?
A.frequency
B.wavelength
C.period
D.propagation speed
B -✓✓which imaging mode requires a broadband transducer?
A.continuous wave doppler
B.Pulsed wave doppler
C.color flow imaging
D.harmonic imaging
B -✓✓what is the doppler shift frequency?
A.recieved ultrasound frequency multiplied by the transmitted ultrasound frequency
B.difference between the transmitted ultrasound frequency and the received ultrasound
frequency
C.sum of the transmitted and received ultrasound frequencies
D.ratio of the transmitted ultrasound frequency to the received ultrasound frequency
D -✓✓what is the potential effect of increasing the pulse repetition frequency(PRF)?
A.Depth ambiguity
B.Decreased frame rate
C.Poor spatial resolution
D.Decreased penetration
B -✓✓what is an advantage of using pulsed wave doppler compared to continuous
wave doppler?
A.higher echo sensitivity
B.ability to select sample depth