# calculate the volume of tumor in logical image

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To Compute the no. of voxel (==1) in logical/binary .mat file
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Voxels = sum(labels(:)==1)
VoxelVol = sum((labels==1).*dV,'all');
%If you have varying size of the voxels, for example if the voxels in the first and last slices are larger than the ones in the centre, then you have to take that into account. For example if the size varies as:
[x,y,z] = meshgrid(1:130,1:130,1:36);
dV = 1 + 4/36^2*(z-18.5).^2;
% To just extract the tumor-flagged voxels from your imstack3-variable you can do just this:
Tumor_vals = imstack3(labels(:));
%If you need to find the location/indices of the tumors you can do:
[idx1] = find(labels(:));
[i1,i2,i3] = ind2sub(size(labels),idx1);
hold on
plot3(i2,i1,i3,'r.')

### Citar como

mohd akmal masud (2024). calculate the volume of tumor in logical image (https://www.mathworks.com/matlabcentral/fileexchange/119443-calculate-the-volume-of-tumor-in-logical-image), MATLAB Central File Exchange. Recuperado .

##### Compatibilidad con la versión de MATLAB
Se creó con R2022a
Compatible con cualquier versión