asylum Files

This repository contains twenty digital lung model data sets from the manuscript "A Synthetic Lung Model (ASYLUM) for Validation of Functional Lung Imaging Methods shows Significant Differences between Signal-Based and Deformation-Field-Based Ventilation Measurements" saved as MATLAB save files.

After loading, the structure variable resMat can be used to access all essential information of the respective model.

Please see attached description:

resMat =

struct with fields:

                       inspTs: [250×256×256 double] - The time-series prior to registration
                   perfectReg: [250×256×256 double] - Known registration based on the defined deformation to create inspTs
                       expRoi: [256×256 logical] - Region of interest of the lung
                   expBodyRoi: [256×256 logical] - Region of interest of the body
                   defectsRoi: [256×256 double] - Randomly assigned defect regions
                         insp: [256×256 double] - Inspiration State (Averaged)
                       jacExp: [250×256×256 double] - Jacobian Determinant (Expiration Space)
                      jacInsp: [250×256×256 double] - Jacobian Determinant (Inspiration Space)
                          exp: [256×256 double] - Expiration State (Averaged)
               deformExpSpace: [256×256×2 double] - Deformation Fields (Expriation Space)
              deformInspSpace: [256×256×2 double] - Deformation Fields (Inspiraiton Space)
                         rvGt: [256×256 double] - Regional Ventilation using perfectReg
                       rvAnts: [256×256 double] - Regional Ventilation using Advanced Normalization Tools
                   rvForsberg: [256×256 double] - Regional Ventilation using Forsberg Registration
                     rvMatlab: [256×256 double] - Regional Ventilation using MATLAB Registration
                    jacDetMat: [256×256 double] - Jacobean Determinant using MATLAB Registration (Subtract 1 to get JVent)
                   jacDetAnts: [256×256 double] - Jacobean Determinant using Advanced Normalization Tools (Subtract 1 to get JVent)
                   jacInspRef: [256×256 double] - Jacobean Determinant using perfectReg (Subtract 1 to get JVent)
               jacDetForsberg: [256×256 double] - Jacobean Determinant using Forsberg (Subtract 1 to get JVent)
  deformationFieldsMatlabMean: [256×256×2 double] - as variable says
    deformationFieldsAntsMean: [256×256×2 double] - as variable says
deformationFieldsForsbergMean: [256×256×2 double] - as variable says
               expImgsRegAnts: [25×256×256 double] - Registered expiration images with ANTs
              inspImgsRegAnts: [25×256×256 double] - Registered inspiration images with ANTs
           expImgsRegForsberg: [25×256×256 double] - Registered expiration images with Forsberg
          inspImgsRegForsberg: [25×256×256 double] - Registered inspiration images with Forsberg
                  inspImgsReg: [25×256×256 double] - Registered inspiration images with perfectReg 
                   expImgsReg: [25×256×256 double] - Registered expiration images with perfectReg
            inspImgsRegMatlab: [25×256×256 double] - Registered inspiration images with MATLAB
             expImgsRegMatlab: [25×256×256 double] - Registered expiration images with MATLAB
                compensateRoi: [128×128 logical] - Region of interest of the compensatory voxels

defectsModel % 1 - Emphysema (No Signal Change at Expiration - No Volume Change) % 2 - fSAD / Airtrapping (No Signal Change at Expiration - No Volume Change) % 3 - Infiltrate (No Volume Change, High Signal) % 4 - Delayed Ventilation (Signal Change, Volume Change delayed) % 5 - Perfusion Defect (Normal Ventilation and Volume Change) % 6 - Delayed Perfusion (Signal Change Delayed