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Exam (elaborations)

Dms Ultrasound Physics Study Guide Questions With Complete Solutions

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Dms Ultrasound Physics Study Guide Questions With Complete Solutions

Institution
DMS
Course
DMS

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Dms Ultrasound Physics Study Guide Questions With
Complete Solutions

4 ways to improve axial resolution Correct Answers 1. Use a
higher frequency transducer
2. Shorten the SPL
3. Reduce PD
4. Reduce # of cycles in a pulse

4 ways to improve lateral resolution? Correct Answers 1.
Change beam width
2. Focus beam
3. Change transducer diameter
4. Use higher frequency

Axial resoultion acronym Correct Answers Longitudinal
Axial
Range/radial
Depth

Definition of lateral resolution? Correct Answers - The ability
of a system to accurately display 2 closely objects perpendicular
to the beams main axis.
-"side by side"

Describe the piezoelectric effect Correct Answers When
electricity is applied the PZT elements converts the electricity
into ultrasound pulses

Does A-MODE produce images? Correct Answers No

, Does ultrasound typically have a high or low QF/ Correct
Answers Low

equation for axial resolution Correct Answers axial resolution
(mm)= spatial pulse length (mm)/2

How are element thickness and frequency related? Correct
Answers Inversely
thicker elements = lower frequency

How do you improve axial resolution? Correct Answers
increase in frequency/ change to higher frequency transducer

How do you improve elevational resolution? Correct Answers
Focus the transducer

How do you improve lateral resolution? Correct Answers
Change beam width. Use a wider transducer

How does lateral resolution change? Correct Answers In
relation to distance from the transducer

How is a annular array transducer focused Correct Answers
Electronically

How is a convex array transducer focused? Correct Answers
electronically curve

How is a convex array transducer steered? Correct Answers
Electronically slope
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