Spatial Compounding & Panoramic Imaging (Lesson 6)

Question 1

What is panoramic imaging?

Answer 1

Produces an image that has a wider field of view than what is available on an individual frame from a transducer

Question 2

Is panoramic preprocessing or postprocessing?

Answer 2

Preprocessing

Question 3

How does panoramic imaging work?

Answer 3

Old echo information from previous frames is retained, and new echoes are added to the image in the direction in which the scan plane is moving

Question 4

Is Spatial Compounding preprocessing or post processing?

Answer 4

Preprocessing

Question 5

What is Spatial Compounding?

Answer 5

A technique in which scan lines are directed in multiple directions by phasing so that structures are interrogated more than once by the ultrasound beam

Question 6

How many frames can be averaged to form a final frame in Spatial Compounding?

Answer 6

Nine frames

Question 7

In Spatial Compounding, how is image quality improved? (4)

Answer 7

1) Persistence (temporal averaging) - speckle reduction

2) Clutter by artifact is reduced

3) Smooth (specular) surfaces are presented more completely

4) Structures previously hidden beneath high attenuating objects can be seen

Question 8

What is the US button for activating Spatial Compounding?

Answer 8

Crossbeam (x)