) variables
A wave is a traveling variations in quantities called wave _________________.
A) length
B) variables
C) cycles
D) periods
D) acoustic
Sound is a traveling variations in quantities called _________________ variables.
A) wave
B) pressure
C) density
D) acoustic
C) 20,00...
EOC 2 Questions Ultrasound
Fundamentals
B) variables
A wave is a traveling variations in quantities called wave
_________________.
A) length
B) variables
C) cycles
D) periods
D) acoustic
Sound is a traveling variations in quantities called _________________
variables.
A) wave
B) pressure
C) density
D) acoustic
C) 20,000
Ultrasound is a sound with a frequency greater than ____________ Hz.
A) 2
B) 15
C) 20,000
D) 1540
D) pressure, density
Acoustic variables include __________________, ____________, and particle
vibration.
A) stiffness, density
B) hardness, impedance
C) amplitude, intensity
D) pressure, density
D) .004 MHz
Which of the following frequencies is in the ultrasound range?
A) 12 Hz
B) 15,000 Hz
,C) 15 kHz
D) 0.004 MHz
B) Propagation speed
Which of the following is not an acoustic variable?
A) Pressure
B) Propagation speed
C) Density
D) Particle Motion
A) cycles
Frequency is the number of ______________ an acoustic variable goes
through in a second.
A) cycles
B) amplitude
C) pulse lengths
D) duty factors
A) hertz, Hz
The unit of frequency is ________________, which is abbreviated
_______________.
A) hertz, Hz
B) megahertz, mHz
C) kilohurts, khts
D) cycles, cps
C) time
Period is the _________that it takes for one cycle to occur.
A) length
B) amplitude
C) time
D) height
C) frequency
Period decreases while _____________ increases.
A) wavelength
B) pulse length
C) frequency
D) bandwidth
B) space
, Wavelength is the length of ________________ over which one cycle
occurs.
A) time
B) space
C) propagation
D) power
A) wave
Propagation speed is the speed with which a(n) ___________ moves
though a medium.
A) wave
B) particle
C) frequency
D) attenuation
A) propagation speed, frequency
Wavelength is equal to _______________ ____________ divided by
___________.
A) propagation speed, frequency
B) media density, stiffness
C) pulse length, frequency
D) wave amplitude, period
D) density, stiffness
The _______________ and _____________ of a medium determine
propagation speed.
A) amplitude, intensity
B) wavelength, period
C) impedance, attenuation
D) density, stiffness
D) stiffness (aka bulk modulus)
Propagation speed increases if ____________ is increased.
A) amplitude
B) frequency
C) density
D) stiffness
B) 1540, 1.54
The average propagation speed in soft tissue ___________m/s or
______________ mm/μs.
A) 10, 3
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