Which artifact is illustrated by this image? correct answera) Shadowing
b) Side Lobe
c) Reverberation
d) Mirroring
What is increased if the pulse
... [Show More] duration is decreased? correct answera) Bandwidth
b) Line Density
c) Frame Rate
d) Duty Factor
What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? correct answera) Deny performance of the exam until a written request is received
b) Seek approval from supervisor
c) Verbally repeat the request back to the referrer to verify correctness
d) Document two forms of ID of the patient
What is the round trip time in soft tissue for an echo from a reflector at a depth of 1 cm correct answera) 1.54 usec
b) 6.5 usec
c)13 usec
d) 26 usec
What adjustment should be made to avoid the aliasing displayed on this spectral doppler image seen on spectral analysis? correct answera) Reposition sample volume so it is deeper.
b) Decrease acoustic power
c) Change the doppler angle from 60 to 45 degrees
d) Decrease the transducer freq
In an unfocused transducer, what is the region between the transducer face and the point where the beam diverges? correct answera) Side lobe
b) Focal Zone
c) Near field
d) Far field
What caused the color pattern demonstrated in the artery indicated by the arrow in this image? correct answera) Superimposed venous flow
b) Aliasing
c) Flow reversal
d) Color side lobe artifact
What technique increases the sharpness of high contrast boundaries? correct answera) Edge enhancement
b) Interpolation
c) Smoothing
d) Frame averaging
Which setting of an ultrasound system gives the sonographer the ability to display both strong and weak echoes? correct answera) Dynamic range
b) Resolution
c) Range calibration
d) Sensitivity
Which condition must be present for refraction to occur? correct answera) Presence of a strong specular reflector
b) Presence of several small reflectors
c) Difference in tissue prop speeds
d) A change in the angle of reflection
In this image, most of the blood flow is in which direction? correct answera) Right to left
b) Left to right
c) Bidirectional
d) Indetermiate
If red blood cells are approaching a 5 MHz doppler transducer at a sppeed of 75 cm/s, what is the appropriate received ultrasound frequency? correct answera) 4,500 kHz
b) 4,995 kHz
c) 5,005 kHz
d) 5,500 kHz [Show Less]