Are you a medical student looking for a quiz to test out what you know about the Physics of ultrasound? If so then you are in luck as the quiz below is perfect for you as it is used by students preparing for their exams too. Do give it a try and see just how much you can remember.
Density
Pressure
Distance
Intensity
Two waves with identical frequencies must interfere constructively
Constructive interference is associated with waves that are in phase
Out of phase waves interfere destructively
Waves of different frequencies may exhibit both contructive and destructive interference at different times
Deca
Deci
Micro
Centi
30 KHZ
8 MHz
8,000 Hz
3,000 kHz
15 Hz
10,000 Hz
1,000 kHz
1kHz
1MHz
Doubles
Halved
Remains the same
4 times greater
Per minute
Msec
Mm/us
MHx
Period
Pulse duration
Pulse length
PRF
0.3
0.005
0.5Hz
0.005msec
Nothing
Halved
Dpib;ed
Quadrupled
105
50
25
55
Quadrupled
Doubled
Halved
Unchanged
SATP
SPTP
SATA
SPTP, SATP, SATA
SPTP SATA, SATP
10.0
1%
1.0
0.0%
10.0
1%
1.0
0.0%
Spatial peak & spatial average
Temporal peak & spatial peak
Pulse average & temporal average
Spatial average & temporal average
1.25 MHz
4.5 MHz
4.8 MHz
5 cm
10 cm
10 mm
10 m
130 mm
13 cm
0.5 dBcm
1cm
3dBcm
1dB
5%
Two times
Twenty times
One hundred times
One million times
The better the temporal resolution
The better is the spatial resolution
The more shades of gray
The higher the reliability
Increased
Decreased
Unchanges
Increased
Decreased
Unchanged
Increased
Decreased
Unchanged
Increased
Decreased
Unchanged