Physics Final Review
The epoxy in the backing will melt
Moisture will cause the electrical wiring to short
The housing may be damaged
The piezoelectric properties will be lost
Apodization will occur
3 dB
50 dB
10 dB
25 dB
6 dB
Decreased Doppler shifts
Low pulse repetition frequency
Decreased sensitivity
Inability to demonstrate flow direction
Decreased ramge resolution
Temporal average
Spatial peak
Spatial average
Temporal peak
Pulse peak
Deepest region attenuation compensation can occur
Region of depth compensation availability
Area of maximum amplification
Depth at which variable compensation begins
Area of minimum amplification
Isolation techniques
OSHA standards
Respiratory isolation
Standard precautions
Reverse isolation
Number of cycles in a pulse
Operating frequency
Spatial pulse length
Beam diameter
Penetration depth
Mechanical and thermal
In vivo and in vitro
Stable and thermal
Transient and stable
Spatial and transient
Fluids soft tissue
Muscle
Air
Bone
Accuracy
Sensitivity
Registration accuracy
Specificity
Positive predictive value
Focusing the sound beam
Irregular excitation of the elements in an array to reduce grating lobes
Creation of a new sound wave with greater amplitude than the original wave
Scattering of the sound beam distal to the focal point
Widening of the sound beam in the near zone
Vertical calibration
Axial resolution
Compression
System performance
Dead zone
Reynolds number
Pulse repetition frequency
Huygens principle
Nyquist limit
Range ambiguity
Increase the near-zone length
Narrow the bandwidth
Decrease operating frequency
Increase temporal resolution
Reduce grating lobes
Increase in penetration depth
Reduction of side lobes
Reduction of grating lobes
Increase in temporal resolution
Increase the frame rate
Increase
Remain unchanged
Double
Decrease by one half
Decrease
3.5 MHz
4.0 MHz
5.0 MHz
2.5 MHz
7.5 MHz
Fast Fourier transfer
Autocorrelation
Scan converter
Pulser
Beam profiler
Moving string phantom
Hydrophone
AIUM 100 test object
Beam profiler
Tissue-mimicking phantom
Weekly
Monthly
Hourly
After each patient
Daily
Frequency
Composition
Assembly
Construction
Operation
Annually
Once a month
One a week
Biannually
One a day
Propagation speed of the medium multiplied by the round-trip time
Density of the medium multiplied by the attenuation coefficient
Attenuation multiplied by the propagation speed of the medium
Density of the medium multiplied by the propagation speed of the medium
Number of pulses in a cycle multiplied by the operating frequency
Write zoom
Persistence
Dynamic range
3-D acquisition
Cine loop
Transmission through a medium
Reflection at an interface
Refraction at an interface
Intensity at the spatial peak
Scattering distal to a dense medium
Refraction
Reflection
Harmonics
Scattering
Reverberation
Disturbed flow
Bruit
Stenosis
Velocity increase
High resistance
Weakly attenuating structure
Structure of high impedance
Strongly reflecting structure
Strongly attenuating structure
Nonspecular reflector
100
25
36
74
50
Proportional Doppler shift
Ambiguous Doppler shift
No Doppler shift
Negative Doppler shift
Density and stiffness of the medium
Impedance difference between the media
Intensity and amplitude of the wave
Pulse repetition period
Compressions and rarefactions in the sound beam
Spatial resolution will decrease
Frame rate will decrease
Pulse repetition frequency will decrease
Field of view will increase
Temporal resolution will increase
Obstetrical imaging commonly utilizes M-mode imaging
Motion of the reflector is represented on the vertical axis
Time is represented on the x-axis
M-mode is a one dimensional display
M-mode is a qualitative series of brightness mode pixels
Three-dimensional imaging
Spatial compounding
Pulse inversion
Pixel interpolation
4D imaging
Energy between two points
Amount of force over a specific area
Rate of motion with respect to time
Rate at which work is performed
Resistance to acceleration
MW cm sq
DB
DB/cm
Rayls
Us
Saturation mode
Hue mode
Variance mode
Velocity
Primary mode
Bit
Byte
Frame
Pixel
Matrix
Blood velocity
Doppler angle
Angle of incidence
Propagation speed of the medium
Operating frequency
Bone
Air
Fat
Soft tissue
Muscle
30 cycles per pulse
5 cycles per pulse
20 cycles per pulse
10 cycles per pulse
15 cycles per pulse
Increase the pulse duration
Reduce the number of cycles in a pulse
Decrease the band width
Increase the spatial pulse length
Protect the components from moisture
Transmission angle
Attenuation angle
Specular angle
Reflection angle
Propagating angle
Decrease in frame rate
Decrease in maximum penetration depth
Decrease the number of scan lines
Slow return of echo reflections
Decrease in pulse repetition period
Decreasing the receiver gain
Decreasing the operating frequency
Decreasing the pulse repetition frequency
Increasing the overall output
Perpendicular incidence
Axial resolution
Dead zone
Contrast resolution
Penetration depth
Lateral resolution
Aqueous gel
Beam former
Backing layer
Matching layer
Damping layer
Electrical frequency of the ultrasound system
Output power of the ultrasound system
Diameter of the beam
Thickness and propagation speed of the element
Impedance of the matching layer
Aliasing
Spectral broadening
Spectral bruit
Spectral noise
Flash artifact
Pulse repetition period
Pulse duration
Focal length
Focal region
Spatial pulse length
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