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[Show more]The layer of material within the transducer which has an intermediate impedance 
between the transducer element and the human tissue in known as the: - 
️️matching layer 
Huygen's Principle - ️️states that waves are the result of the interference of many 
wavelets produced at the face of ...
Preview 2 out of 9 pages
Add to cartThe layer of material within the transducer which has an intermediate impedance 
between the transducer element and the human tissue in known as the: - 
️️matching layer 
Huygen's Principle - ️️states that waves are the result of the interference of many 
wavelets produced at the face of ...
_______ ______ Artifact (AKA _____ _________ Artifact) occurs when the slice 
thickness is WIDER than the structure being imaged - ️️Partial Volume Artifact 
(AKA Slice thickness artifact) 
When The spatial resolution is equal in all dimensions or imaging planes, it is 
considered _________ Reso...
Preview 3 out of 22 pages
Add to cart_______ ______ Artifact (AKA _____ _________ Artifact) occurs when the slice 
thickness is WIDER than the structure being imaged - ️️Partial Volume Artifact 
(AKA Slice thickness artifact) 
When The spatial resolution is equal in all dimensions or imaging planes, it is 
considered _________ Reso...
What will happen to the patients body is HE/SHE is in shock? - ️️drop in blood 
pressure 
decreased respiration 
tachycardia 
chest pain 
loss of mental alertness 
What describes the distance from the beginning of a cycle to the end of that cycle? - 
️️wavelength 
What are the three primary ...
Preview 1 out of 4 pages
Add to cartWhat will happen to the patients body is HE/SHE is in shock? - ️️drop in blood 
pressure 
decreased respiration 
tachycardia 
chest pain 
loss of mental alertness 
What describes the distance from the beginning of a cycle to the end of that cycle? - 
️️wavelength 
What are the three primary ...
Spatial Pulse Length is directly proportional to - ️️the Number of Cycles in the 
Pulse 
and 
the Wavelength 
(Directly Proportional means that increased SPL will increase both the number of cycles 
in the pulse and the wavelength if increased). 
Spatial pulse length is inversely proportional to...
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Add to cartSpatial Pulse Length is directly proportional to - ️️the Number of Cycles in the 
Pulse 
and 
the Wavelength 
(Directly Proportional means that increased SPL will increase both the number of cycles 
in the pulse and the wavelength if increased). 
Spatial pulse length is inversely proportional to...
Definition of Duty Factor? - ️️The percentage of time the pulse is on 
-Unitless (just a number) 
-For continuous wave, duty factor = 100% 
-For pulsed wave, Duty Factor is less than 1% 
What are the two types of Ultrasound Waves? - ️️1.) Electromagnetic - Wave 
travels through a vacuum. 
2....
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Add to cartDefinition of Duty Factor? - ️️The percentage of time the pulse is on 
-Unitless (just a number) 
-For continuous wave, duty factor = 100% 
-For pulsed wave, Duty Factor is less than 1% 
What are the two types of Ultrasound Waves? - ️️1.) Electromagnetic - Wave 
travels through a vacuum. 
2....
Which of the following statements about speed and attenuation are true? 
a. Attenuation through and propagation speed in a particular medium are unrelated to 
each other. 
b. When a sound beam travels faster in a medium, the attenuation is less. 
c. When a sound beam travels slower in a medium, the ...
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Add to cartWhich of the following statements about speed and attenuation are true? 
a. Attenuation through and propagation speed in a particular medium are unrelated to 
each other. 
b. When a sound beam travels faster in a medium, the attenuation is less. 
c. When a sound beam travels slower in a medium, the ...
Which of the following is not a potential cause of artifact and diagnostic imaging? 
A. Operator error 
B. equipment malfunction 
C. Patient motion 
D. Ultrasound physics 
E. none of the above - ️️E. none of the above 
The four choices, A through D, represent the primary explanations of artifact...
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Add to cartWhich of the following is not a potential cause of artifact and diagnostic imaging? 
A. Operator error 
B. equipment malfunction 
C. Patient motion 
D. Ultrasound physics 
E. none of the above - ️️E. none of the above 
The four choices, A through D, represent the primary explanations of artifact...
a transverse wave has particles that move in a - ️️perpendicular direction (right 
angles or 90 degrees) to the wave direction 
acoustic variables identify which waves are sound waves, when an acoustic variable 
changes in time a - ️️sound wave is present 
length is measured in - ️️cm, f...
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Add to carta transverse wave has particles that move in a - ️️perpendicular direction (right 
angles or 90 degrees) to the wave direction 
acoustic variables identify which waves are sound waves, when an acoustic variable 
changes in time a - ️️sound wave is present 
length is measured in - ️️cm, f...
What is the best estimate of the distance that sound can travel in soft tissue in one 
second? 
- 1 yard 
- 100 yards 
- 1 mile 
- 10 miles - ️️1 mile 
Which of the following is NOT one of the physical processes that contributes to 
attenuation of US waves passing through soft tissue? 
- reflect...
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Add to cartWhat is the best estimate of the distance that sound can travel in soft tissue in one 
second? 
- 1 yard 
- 100 yards 
- 1 mile 
- 10 miles - ️️1 mile 
Which of the following is NOT one of the physical processes that contributes to 
attenuation of US waves passing through soft tissue? 
- reflect...
Ultrasound waves that are traveling through a medium consist of 
a. electromagnetic and radio frequencies 
b. compressions and refractions 
c. electromagnetic and ionizing frequencies 
d. compressions and rarefactions - ️️d. 
What is the difference between audible sound and ultrasound? 
a. audib...
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Add to cartUltrasound waves that are traveling through a medium consist of 
a. electromagnetic and radio frequencies 
b. compressions and refractions 
c. electromagnetic and ionizing frequencies 
d. compressions and rarefactions - ️️d. 
What is the difference between audible sound and ultrasound? 
a. audib...
The time from the beginning of a pulse until its end is ______________? - ️️pulsed 
duration 
If the frequency of US is increased from 0.77MHz to 1.54MHz, what happens to the 
propagation speed? - ️️remains the same 
All of the following are true EXCEPT: - ️️two waves with identical freq...
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Add to cartThe time from the beginning of a pulse until its end is ______________? - ️️pulsed 
duration 
If the frequency of US is increased from 0.77MHz to 1.54MHz, what happens to the 
propagation speed? - ️️remains the same 
All of the following are true EXCEPT: - ️️two waves with identical freq...
All of the following are true EXCEPT: 
a) two waves with identical frequencies must interfere constructively. 
b) constructive interference is associated with waves that are in-phase. 
c) out-of-phase waves interfere destructively. 
d) waves of different frequencies may exhibit both constructive and...
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Add to cartAll of the following are true EXCEPT: 
a) two waves with identical frequencies must interfere constructively. 
b) constructive interference is associated with waves that are in-phase. 
c) out-of-phase waves interfere destructively. 
d) waves of different frequencies may exhibit both constructive and...
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Add to cartDestructive vs constructive interference - ️️Constructive interference occurs when 
two waves overlap at the same location at the same point in time ( in phase) and the 
new combined wave has an amplitude greater than the original two waves. 
Destructive interference occurs when the waves are ou...
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Add to cartDestructive vs constructive interference - ️️Constructive interference occurs when 
two waves overlap at the same location at the same point in time ( in phase) and the 
new combined wave has an amplitude greater than the original two waves. 
Destructive interference occurs when the waves are ou...
Which of the following adjustments will improve temporal resolution on color Doppler? 
A. steer the sample box 
B. increase the wall filter 
C. decrease sample size 
D. increase color gain - ️️C. decrease the sample size 
While using the same type of ultrasound system, a 5MHz continuous wave and...
Preview 3 out of 23 pages
Add to cartWhich of the following adjustments will improve temporal resolution on color Doppler? 
A. steer the sample box 
B. increase the wall filter 
C. decrease sample size 
D. increase color gain - ️️C. decrease the sample size 
While using the same type of ultrasound system, a 5MHz continuous wave and...
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