Patent ID: 11931143
Assignee: WILLIAM BEAUMONT HOSPITAL
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 6:
7. A system comprising:
data processing hardware; and
memory hardware in communication with the data processing hardware, the memory hardware storing instructions that when executed on the data processing hardware cause the data processing hardware to perform operations comprising:
obtaining one or more images of lungs;
determining a spatial transformation of each voxel within the lungs between the lungs at an inhale position and the lungs at an exhale position to provide displacement vector estimates for each voxel within the lungs;
performing volume change inference operations to determine a volume change between the lungs at the inhale position and the lungs at the exhale position based on an inhale region of interest, an exhale region of interest, and the displacement vector estimates for each voxel within the lungs; and

computing a lung compliance based on the volume change inference operations;
wherein the lung compliance is calculated as, LC
      ⁡
      
        (
        x
        )
      
    
    =
    
      
        
          vol
          ⁡
          
            (
            x
            )
          
        
        -
        
          
            J
            ⁡
            
              (
              
                x
                ;
                ϕ
              
              )
            
          
          ·
          
            vol
            ⁡
            
              (
              x
              )
            
          
        
      
      
        
          p
          1
        
        -
        
          p
          2
        
      
    
  
  ,, where J(x; ϕ) is the Jacobian, ϕ is the DIR solution, p1 is a first pressure, and p2 is a second pressure.