The study of matter, motion, energy, force and much more is on the line in this quiz as we take a closer look at the scientific subgenre of physics. What can you tell us about the following topics?
19,000 kHz
10,000 MHz
20,000 msec
15,000 Hz
Deca, deci, centi, micro
Deci, deca, centi, micro
Micro, centi, deca, deci
Centi, micro, deci, deca
Frequency
Period
Propagation speed
Range resolution
Increasing stiffness and increasing density
Increasing stiffness and increasing elasticity
Decreasing compressibility and decreasing density
Decreasing stiffness and decreasing density
Gas, liquid and solid
Solid liquid and gas
Liquid gas solid
Doubles
Halved
Remain the same
4 times greater
Quadrupled
Doubled
Halved
Unchanged
10.0
1%
1.0
0.0%
Fat
Air
Muscle
Bone
Reflection increases
Transmission increases
Refraction increases
Absorption increases
Propagation speeds
Frequencies
Attenuation coefficients
None of the above
1%
22%
34%
99%
600
6
0.6
0.006
Lower the PRF
Raise the PRF
Increase the gain
Use a lower frequency transducer
Decreased beam diameter
Decreased pulse duration
Decreased imaging depth
Decreased pixel size
Decreased spatial pulse length
Small diameter, high frequency
Small diameter, low frequency
Large diameter, high frequency
Large diameter, low frequency
US speed increases
Frequency increases
Depth increases
Depth decreases
True
False
100 times
1,000,000 times
20 times
10 times
Large pixels with many bits/pixel
Small pixels with few bits/pixel
Many TV lines per frame
High contrast
Narrow dynamic range
Increase the gain
Check the scan head
Check the same converter
Adjust the recorder
Decrease the amplitude
Decrease the range of amplitudes
Decrease the range of frequencies
Tendon
Blood
Lung
Fat
Amniotic fluid
In vitro bioeffects conclusions are clinically relevant
In vitro bioeffects are always real
In vitro bioeffects are vey important
In vitro bioeffects may not be applicable to clinical settings
Dynamic range
Frame averaging
Gray scale
Edge enhancement
Receiver gain