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The ‘apparent’ diffusion map
b0
b800
ADC
Dense structure
(LN,
tumour, nerves):
High SI on T2 w MRI
high SI on b800
Low ADC
Necrosis:
High SI on T2w MRI
low SI on b800
high ADC
ADC =
slope of b-val vs ln(SI)
S
b
= S
T2
e
–b ADC