In-room imaging and MR planning

Diffusion parameters (the options you have)

180 o

90 o

q

q

G

readout

δ

Δ

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”)

∝ 2 ∗ ∆

The amount DW is expressed as the b-value:

2 ∙ ∆ − ൗ 3

=

low b-value = bright image high b-value = dark image

b=0 b=500 b=1000 b=1500 b=2000 b=2500