Now playing · 07 MRI
Chemical-shift pixels
Δf = 223.5 Hz
n
p
i
x
=
Δ
f
⋅
N
x
/
B
W
,
Δ
f
=
δ
(
γ
/
2
π
)
B
0
n_{\mathrm{pix}}=\Delta f\cdot N_x/\mathrm{BW},\quad \Delta f=\delta(\gamma/2\pi)B_0
n
pix
=
Δ
f
⋅
N
x
/
BW
,
Δ
f
=
δ
(
γ
/2
π
)
B
0
Water–fat shift in pixels = Δf / (BW / N_x).
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