"In MRI with diffusion-weighted imaging (DWI), the b value measures the degree of diffusion weighting applied, thereby indicating the amplitude (G), time of applied gradients (δ) and duration between the paired gradients (Δ)."
"To sense slow moving water molecules and smaller diffusion distances, b values should be higher (e.g. b = 500 s/mm2)."
"Apparent diffusion coefficient is calculated using different b-values (e.g. 0-1000 s/mm2)."