finite element method for medical images
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I am trying to create fem mesh for MRI brain tumor image after labeling but shows error below.
Error using checkMeshIncompatible
Invalid input mesh. Neighboring mesh elements or mesh elements in one or more regions are not properly
connected.
Error in checkMeshValidity (line 49)
checkMeshIncompatible(elements(1:3,:)');
Error in pde.EquationModel/geometryFromMesh (line 126)
checkMeshValidity(nodes,elements,regions);
Error in untitled (line 17)
geometryFromMesh(model,verticesPatientMeters',faces');
The script is given below:
filepath = ("C:\Users\DELL\OneDrive\Documents\MATLAB\");
dataFolder = fullfile(filepath,"MedicalVolumeDICOMData","LabelData");
labelVol = medicalVolume("C:\Users\DELL\OneDrive\Documents\MATLAB\MedicalLabelingSession6\LabelData\8_19_2021_11_41_40_AM.nii");
R = labelVol.VolumeGeometry;
isovalue = 1;
[faces,vertices] = extractIsosurface(labelVol.Voxels,isovalue);
I = vertices(:,1);
J = vertices(:,2);
K = vertices(:,3);
[X,Y,Z] = intrinsicToWorld(R,I,J,K);
verticesPatient = [X Y Z];
verticesPatientMeters = verticesPatient.*10^-3;
triangul = triangulation(double(faces),double(verticesPatientMeters));
viewer = viewer3d;
surface = images.ui.graphics3d.Surface(viewer,data=triangul,Color=[1 0 0],Alpha=1);
model = createpde(3);
geometryFromMesh(model,verticesPatientMeters',faces');
pdegplot(model,FaceLabels="on")
2 Commenti
Brian McDonnell
il 9 Apr 2024
Hi did you find a solution for this? I'm also getting some similar errors with a mesh generated in tetGen. I'm confident after some extensive checking that the mesh is fine. I've been using checkMeshIncompatible to try and troubleshoot the issue but no luck.
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