Panoramic Imaging and Spatial Compounding

Question 1

What kind of image is produced with panoramic imaging?

Answer 1

Wider field of view

Question 2

What kind of imaging involves sliding the transducer in a direction parallel to the scan plane?

Answer 2

Panoramic Imaging

Question 3

T or F? Panoramic imaging is pre-processing function

Answer 3

TRUE

Question 4

T or F? Spatial compounding is pre-processing function?

Answer 4

TRUE

Question 5

In spatial comounding, scan lines are directed in?

Answer 5

Multiple directions by phasing so that structures can be interrogated more than once by the US beam

Question 6

How many frames can be averaged in spatial compounding?

Answer 6

Nine

Question 7

Advantages of spatial compounding

Answer 7

1. Persistence (temporal averaging), speckle is reduced
2. Clutter is reduced
3. Smooth surfaces are presented more completely
4. Structures hidden behind attenuating objects can be visualized

Question 8

Persistence is AKA?

Answer 8

Temporal averaging

Question 9

What button do we press to activate spatial compounding?

Answer 9

X -beam

Question 10

What is a disadvantage of spatial compounding?

Answer 10

Longer aquisition time

Question 11

In what type of imaging is old information from the previous frames retained?

Answer 11

Panoramic imaging