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Diffusion parameters (the options you have)
90
o
readout
180
o
q
q
δ
Δ
G
By adjusting the
time spacing
and
strength
of the gradients we can change the
amount of Diffusion Weighting
(i.e., “making the sequence more or less sensitive to molecular motion”)
The amount DW is expressed as the b-value:
∝
2
∗ ∆
low b-value = bright image high b-value = dark image
b=0 b=500 b=1000 b=1500 b=2000 b=2500
=
2
∙ ∆ − ൗ 3