"Rad229: MRI Signals and Sequences" is a course offered in the Department of Radiology at Stanford University (2020).

Lecture-15: “Magnetization Preparation II - Diffusion” is broken down into three mini-lectures. 

Lecture-15B reviews the basics of “Diffusion Weighted Imaging”. The learning objectives include: 

• Recall a simple expression for how the MRI signal depends on diffusion.
• Understand how gradients control diffusion sensitivity.
• Appreciate how the spin echo DWI sequence is built.
• Describe the steps required to measure diffusion with MRI.
• Distinguish high and low ADC from DWI-based images.
• Explain the concept of T2 shine through from the signal eqn.

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