Lowest Attenuation is found at
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lowest frequency, with the shortest path length.
What describes the percentage of time that sound is on?
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Duty factor is the percentage of time the sound is being transmitted
Continuous Wave
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Sound that is continuously transmitted
Which has the Slowest Propagation Speed?
Water
Soft Tissue
Bone
Lung tissue
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Lung Tissue
Increasing wavelength will_______frequency?
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Decrease
,Areas of high pressure and density are referred to as:
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Compressions
What term and philosophy relates the amount of exposure time for the sonographer
and patient during a diagnostic ultrasound examination?
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ALARA - As Low As Reasonably Achievable
What will decrease beam divergence in the far field?
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A large crystal diameter and high frequency would decrease the beam
divergence in the far field
The speed of sound in soft tissue:
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1540 m/s
, Does Beam Width directly affect frame rate?
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No:
The following directly affect frame rate:
Depth of Penetration
Field of View
Number of Focuses
and Line Density
Micro is denoted as:
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Micro is denoted as millionth (µ)
Stiffness and propagation speed are
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Directly Related
Also remember:
↑ Stiffness ↑ Speed
↓ Density ↑ Speed
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lowest frequency, with the shortest path length.
What describes the percentage of time that sound is on?
,Give this one a try later!
Duty factor is the percentage of time the sound is being transmitted
Continuous Wave
Give this one a try later!
Sound that is continuously transmitted
Which has the Slowest Propagation Speed?
Water
Soft Tissue
Bone
Lung tissue
Give this one a try later!
Lung Tissue
Increasing wavelength will_______frequency?
Give this one a try later!
Decrease
,Areas of high pressure and density are referred to as:
Give this one a try later!
Compressions
What term and philosophy relates the amount of exposure time for the sonographer
and patient during a diagnostic ultrasound examination?
Give this one a try later!
ALARA - As Low As Reasonably Achievable
What will decrease beam divergence in the far field?
Give this one a try later!
A large crystal diameter and high frequency would decrease the beam
divergence in the far field
The speed of sound in soft tissue:
Give this one a try later!
1540 m/s
, Does Beam Width directly affect frame rate?
Give this one a try later!
No:
The following directly affect frame rate:
Depth of Penetration
Field of View
Number of Focuses
and Line Density
Micro is denoted as:
Give this one a try later!
Micro is denoted as millionth (µ)
Stiffness and propagation speed are
Give this one a try later!
Directly Related
Also remember:
↑ Stiffness ↑ Speed
↓ Density ↑ Speed
