Pulsed Ultrasound Instrumentation Flashcards

1
Q

What is harmonic imaging?

A

High and low pressure ultrasound waves, high waves travel faster, creates distortion, generates harmonics within the targeted tissue

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2
Q

What are some benefits of harmonic imaging?

A

-improve lateral resolution
-improve contrast resolution
-reduce beam width
-reduce sidelobe artifacts

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3
Q

What are some cons of harmonic imaging?

A

-reduced frame rate
-reduced penetration

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4
Q

What does a wide dynamic range show?

A

More shades of grey and smoother images

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5
Q

What does a narrow dynamic range show?

A

Less shades of grey that appear at a higher contrast

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6
Q

What is compound imaging?

A

Views from different angles of insonation to produce a more comprehensive image (reduces speckle and improves definition

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