## calculate the volume of tumor in logical image

Version 1.0.0 (1.44 KB) by
To Compute the no. of voxel (==1) in logical/binary .mat file

Updated Sun, 23 Oct 2022 16:43:09 +0000

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.')

### Cite As

mohd akmal masud (2023). 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. Retrieved .

##### MATLAB Release Compatibility
Created with R2022a
Compatible with any release
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Version Published Release Notes
1.0.0