Patent ID: 11900592
Assignee: PING AN TECHNOLOGY (SHENZHEN) CO., LTD
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 8:
9. The method according to claim 1, wherein encoding the initialized feature vector hp0 for each vertex p includes:
obtaining a local feature vector hp of a vertex p in the mesh model by pooling prediction probability maps F(x)w,h,d of a segmentation network F(x) within each receptive field corresponding to each of four zones Z(p) of the pancreas of the patient, wherein F(x)w,h,d∈RK,(w,h,d)∈Z(p), and K is a task label indicating a task including a classification task between the masses of the PDAC and the non-PDAC, and a treatment recommendation task;
obtaining a global feature vector in the mesh model by globally pooling the prediction probability maps F(x)w,h,d of the segmentation network F(x); and
concatenating coordinates (xp, yp,zp) of the vertex p, an average edge length ep between the vertex p and neighbors of the vertex p, a distance dp between the vertex p and a nearest point at a surface of the segmented pancreatic mass, the local feature vector of each vertex p, and the global feature vector to encode the initialized feature vector hp0 for each vertex p, wherein, e
      p
    
    =
    
      
        ∑
        
          
            p
            ′
          
          ∈
          
            N
            ⁡
            
              (
              p
              )
            
          
        
      
      ⁢
      
        
          e
          
            pp
            ′
          
        
        /
        
          
          
            N
            ⁡
            
              (
              p
              )
            
          
          
        
      
    
  
  ,
  
    

  
  ⁢
  
    
      d
      p
    
    =
    
      
        min
        r
      
      ⁢
      
        
          
          
            p
            -
            r
          
          
        
        2
        2
      
    
  
  ,
  
    

  
  ⁢
  
    
      p
      ′
    
    ∈
    
      N
      ⁡
      
        (
        p
        )
      
    
  
  ,

 N(p) is neighboring vertices of the vertex p, and r is a point of the surface of the segmented pancreatic mass.