In-room imaging and MR planning

2D Fourier Transform

x x x x x x x x x x x x x x x x x

x x x x x x x x x x x x x x x x x

 k

y

x x x x x x x x x x x x x x x x x

x x x x x x x x x x x x x x x x x

x x x x x x x x x x x x x x x x x

x x x x x x x x x x x x x x x x x

y

k

x x x x x x x x x x x x x x x x x

y

x x x x x x x x x x x x x x x x x

x

k

x

The distance between sample points (  k ) determines FOV If  k too large, aliasing occurs