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
2
Q
What are some benefits of harmonic imaging?
A
-improve lateral resolution
-improve contrast resolution
-reduce beam width
-reduce sidelobe artifacts
3
Q
What are some cons of harmonic imaging?
A
-reduced frame rate
-reduced penetration
4
Q
What does a wide dynamic range show?
A
More shades of grey and smoother images
5
Q
What does a narrow dynamic range show?
A
Less shades of grey that appear at a higher contrast
6
Q
What is compound imaging?
A
Views from different angles of insonation to produce a more comprehensive image (reduces speckle and improves definition
