Which of the following is described as the ability of an object to re-
sist compression and relates to the hardness of a medium?
a. Stiffness
b. Density
c. Pressure
d. Inertia - ANS Stiffness
An increase in PRF would lead to:
a. An increase in DF
b. A decrease in PD
c. An increas...
Which of the following is described as the ability of an object to re-
sist compression and relates to the hardness of a medium?
a. Stiffness
b. Density
c. Pressure
d. Inertia - ANS Stiffness
An increase in PRF would lead to:
a. An increase in DF
b. A decrease in PD
c. An increase in the number of cycles
d. A decrease in resolution - ANS An increase in DF
Which of the following would have the lowest propagation speed
A.air
B.bone
C.soft tissue
D.water - ANS Bone
Which of the following would have the lowest propagatio
a. Water
b. Soft tissue
C. Bone
d. Lung tissue - ANS Water
As imaging depth increases, the PRF must:
a. Not change
b. Increase
C. Decrease
d. PRF does not relate to imaging depth - ANS Decrease
Which of the following describes the amount of
curs at an interface?
a. Bernoulli's law
b. Poiseuille's law
, c. Law of reflection
d. Snell's law - ANS Snells law
Pressure is typically expressed in:
a. Frequency
b. Pascals
c.Decibels
d. Kilograms per centimeter cubed - ANS Pascals
The typical range of frequency for diagnostic
a. 20 to 20,000 Hz
b. 1 to 20 MHz
c. 2 to 15 kHz
d. 12 to 100 MHz - ANS 1 to 20 MHz
The attenuation coefficient in soft tissue is el
a. One-half of the operating frequency
b. Double the operating frequency
c. Frequency times path length
d. The total decibels - ANS One-half of the operating frequency
Micro denotes:
a. Millionth
b. Hundredth
c. Million
d. Billionth - ANS Millionth
Which of the following is described as the
cycle occurs?
a. PD
b. DF
c. Period
d. Wavelength - ANS Wavelength
Which of the following requires an oblique interface and
tion speed mismatch?
a. Reflection
b. Refraction
c. Normal incidence
d. Dampina - ANS Refraction
Areas of high pressure and density are referred to as:
a. Compressions
b. Rarefactions
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