Patent ID: 11961164
Assignee: SIEMENS MEDICAL SOLUTIONS USA, INC.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 8:
9. The system of claim 6, wherein the step (c) comprises:
maximizing the following objective function, L
    A
   
   (
   f
   )
  
  =
  
   
    ∑
    
     
      j
      =
      
       {
       
        ρ
        ⁢
        θ
        ⁢
        ζ
       
       }
      
     
     ,
     T
    
   
   
    (
    
     
      
       y
       
        j
        ⁢
        T
       
      
      ⁢
      
       ln
       ⁡
       (
       
        
         y
         _
        
        
         j
         ⁢
         T
        
       
       )
      
     
     -
     
      
       y
       _
      
      
       j
       ⁢
       T
      
     
    
    ), with regard to f for the activity reconstruction;
wherein f is activity image;
wherein ordered subsets expectation maximization algorithm is applied with one iteration and 21 subsets; and
maximizing the following objective function, L
    
     C
     ⁢
     E
    
   
   (
   ε
   )
  
  =
  
   
    ∑
    
     
      j
      =
      
       {
       
        ρ
        ⁢
        θ
        ⁢
        ζ
       
       }
      
     
     ,
     T
    
   
   
    (
    
     
      
       y
       
        j
        ⁢
        T
       
      
      ⁢
      
       ln
       ⁡
       (
       
        
         y
         _
        
        
         j
         ⁢
         T
        
       
       )
      
     
     -
     
      
       y
       _
      
      
       j
       ⁢
       T
      
     
    
    ), with regard to ε, wherein ε is the crystal efficiency.