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MRI Physics Explained

Join Dr. TE, MD on this epic MRI physics journey starting with a simple question: How does an MRI machine create the pictures we’ve come to know and love? The answers to this and more can be found here with new lectures packed full of original graphics and animations!

Introduction Lectures

  • Nuclear Magnetic Resonance
  • Image Slice Selection
  • Frequency Encoding
  • Phase Encoding
  • T2 Relaxation and Image Contrast
  • T1 Recovery and Image Contrast
  • TR, TE, & MRI Image Weighting

Pulse Sequences Explained

  • The MRI Echo: How It Works
  • The Spin Echo Sequence
  • The Turbo/Fast Spin Echo Sequence
  • HASTE & Single Shot Fast Spin Echo (SS-FSE)
  • The Gradient Recalled Echo (GRE)
  • Echo Planar Imaging (EPI)
  • Diffusion Weighted Imaging (DWI)
  • How to Read Diffusion Weighted Imaging (DWI)
  • Diffusion Tensor Imaging (DTI)

Advanced Lectures

  • Introduction to Advanced MRI Physics
  • Fourier Series & Fourier Transforms

Additional Content

  • Intro to Imaging Resolution
  • Definition of T1 Constant
  • T2*, Flip Angle, Calculating T1 Recovery Time

The PIRL

Another excellent MRI Physics series with great structure and high quality animations!

  • How MRI Works - Part 1 - NMR
  • How MRI Works - Part 2 - The Spin Echo
  • How MRI Works - Part 3 - Fourier Transform and K-Space
  • How MRI Works - Part 4 - The Gradient Recalled Echo (GRE)

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