Combine the Gradient Echo with the Spin Echo

• Can use the $\pi$ pulse to invert phase due to gradient
  
  

  
  
  
  
  
  
  
  

• Alternatively, don't have to use the $\pi$ pulse to manipulate gradient phase
  
  

  
  
  
  
  
  
  
  

• 99% of time coordinate spin echo and gradient echo to coincide and people refer to only as spin echo imaging.