2017 Imaging for Physicists Coursebook

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Animations courtesy of Karla Miller, Oxford

90

o

readout

180

o

position

encoding

Position

decoding

B -ΔB

B +ΔB

B

Without diffusion:

all spins have fixed

position

1. All spins accrue

phase depending on

their (static) position

2. 180

°

pulse flips

magnetization

3. All spins realign