Background Image
Table of Contents Table of Contents
Previous Page  202 / 1116 Next Page
Information
Show Menu
Previous Page 202 / 1116 Next Page
Page Background

Sampling of k-space

Aliasing/Fold-over artifact:

• Fold-over of signal from outside field-of-view into the image

• Appears in phase-encoding direction

What to do about it:

• Increase FOV in phase-encoding direction

– (decrease the distance between k-lines)

• Suppress signal from outside FOV