Basics of MRI Diffusion and Perfusion

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Concepts within diffusion-weighted imaging include: b-value, trace diffusion, apparent diffusion coefficient, ADC map, and eADC. The second half of the presentation discusses MR perfusion, dynamic susceptibility weighted contrast-enhanced MR perfusion and the typical maps produced, including relative cerebral blood volume (rCBV), cerebral blood flow (CBF), time to peak (TTP), mean transit time (MTT), corrected cerebral blood volume (CCBV), and K2.