BASIC PHYSICS OF MAGNETIC RESONANCE IMAGING (MRI)

 

History

 

Basis of MRI

 

Why hydrogen?

 

Types of magnet

 

The receiver coils

 

Gradient coils

 

Effect of a magnetic field on the protons

 

Slice selection

 

Local magnetic fields

 

What does being in resonance mean?

 

Effect of the RF pulse on the hydrogen protons

 

MRI basic sequence: spin echo sequence (SE)

 

      T1 weighted sequence

 

       T2 weighted sequence

 

Fast spin echo sequences

 

Proton density weighted sequence (D)

 

Inversion recovery sequence (IR)

 

Short time inversion recovery sequence (STIR)

 

Fluid attenuated inversion recovery sequence (FLAIR)

 

Contrast agents

​