A. Change in vessel direction
Which variable precipitated the shade change from blue to crimson of the vessel on this photo?
A. Change in vessel course
b. Color scale set too low
c. Turbulent go with the flow
d. Severe stenosis
C. Twice the transmitted frequency
With harmonic imaging, how does echo frequency relate to transmitted frequency?
A. Half the transmitted frequency
B. Equal to the transmitted frequency
C. Twice the transmitted frequency
D. Four instances the transmitted frequency
A. Frequency
To which acoustic variable is penetration intensity inversely associated?
A. Frequency
B. Wavelength
C. Period
D. Propagation speed
D. Time-benefit reimbursement
Which manage improves the effects of attenuation?
A. Dynamic range
B. Pulse inversion
C. Multiple focal zones
D. Time-gain repayment
A. Phasic
Which term describes blood flow changes in reaction to breathing?
A. Phasic
B. Parabolic
C. Spontaneous
D. Pulsatile
, D. Thickness
The middle frequency of a transducer depends mostly upon which characteristic of the crystal?
A. Width
B. Length
C. Spacing
D. Thickness
B. Ability to sample depth
What is a bonus of using pulsed wave Doppler as compared to continuous wave Doppler?
A. Higher echo sensitivity
B. Ability to pattern intensity
C. Decreased display of aliasing
D. Improved temporal resolution
A. Zero stages
Which Doppler perspective to float consequences in the finest absolute Doppler shift?
A. 0 levels
B. 15 levels
C. 45 stages
D. 60 degrees
D. Spatial compounding
Which time period describes the averaging together of test lines from more than one angles to
create one image?
A. Harmonic imaging
B. Real-time three-dimensional imaging
C. Elastography
D. Spatial compounding
B. B-mode
Which imaging modality can provide the most correct measurement of tumor extent?
A. Color Doppler
B. B-mode
C. A-mode
D. M-mode
A. Transmit strength