Questions from the back of the book Flashcards
Coded excitation, eliminates
Range ambiguity
First thing you should do when seeing a patient is
Check the wristband
Spatial compounding is the creation of an image from different
Angles
Penetration is an advantage of _______excitation
Coded
Strongest reflectors are in
Air
weakest reflectors are in soft tissue
What artifact is created by an object located deeper than the image?
Range ambiguity
Lowering PRF reduces range
Ambiguity
Coded excitation improves what resolution?
Contrast resolution improves with coded excitation.
The consolidation of many images into a single frame best describes
Persistence
What describes the empirical approach to the study of bio facts?
Exposure response
What best describes the mechanicstic approach to the study bio facts?
Cause and effect 
Mechanical index is associated with what
Cavitation
What is the name of the receiver function that corrects for attenuation?
Compensation
What is the elimination of voltages that do not exceed a certain level?
Reject
What is the first adjustment made win an entire images to dark
gain needs to be adjusted
The more pixels per inch means the better the ______ resolution
The more pixels per inch means the better spatial resolution
The more bits per pixel’s means more shade of
Gray
At the focus, the Beam diameter is______ the transducer diameter
Half
If we increase the transducer diameter, the beam diameter in the far zone is going to increase or decrease
If we increase the transducer diameter, the beam diameter in the far zone is going to decrease
If the transducer aperture increases, the lateral resolution at its smallest dimension is going to increase or decrease?
Increase
If the frequency is decreased, the numerical value of the radio resolution is
Increased
What are the units of longitudinal resolution?
Ft
With the presence of ________ we see more boundaries, then there are reflecting surfaces
Reverberations
The Doppler shift always occur if the source and observer are in motion relative to each other in the angle between them is not 90°
True
