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

Claim 2:
3. The method of claim 2, wherein the scanner normalization factor Z may accommodate for the mashing and rebinning of the LORs, connecting two detector scintillation crystals i and i′ into projection bin according to the equation:, n
     
      ρθ
      ⁢
      z
     
     
      -
      1
     
    
    (
    ε
    )
   
   =
   
    
     ∑
     
      i
      ,
      
       i
       ′
      
     
    
    
     
      ω
      
       
        ρθ
        ⁢
        z
       
       ,
       
        ii
        ′
       
      
     
     ⁢
     
      g
      
       ii
       ′
      
     
     ⁢
     
      ε
      i
     
     ⁢
     
      ε
      
       i
       ′
      
     
    
   
  
  ;
 

wherein g is the geometrical component of the normalization array; and
wherein ω is the LOR contribution factor into projection data due to mashing and spanning data compression techniques and defined by the following:, ω
   
    j
    ,
    
     i
     ⁢
     
      i
      ′
     
    
   
  
  =
  
   {
   
    
     
      
       
        
         1
         /
         2
        
        ,
         
        
         if
         ⁢
            
         i
         ⁢
         
          i
          ′
         
         ⁢
            
         contribute
         ⁢
            
         to
         ⁢
            
         sinogram
         ⁢
            
         bin
         ⁢
            
         j
        
       
      
     
     
      
       
        0
        ,
         
        otherwise
       
      
     
    
    .