How to calculate dice overlap for MRI images?

hi! I want to calculate dice overlap for complete tumor ,tumor core and enhancing tumor core.suggest me a way to do it.Thanks in advance.

[Image Analyst]

I don't know what that is. Do you mean the Sørensen–Dice coefficient?

[Sandhiya Prakash]

yes sir.I mean Sørensen–Dice coefficient only.How to calculate this?

Answer 1

[Tobias Goodwin-Allcock]

Hi Sandhiya!

You can load the tumor volume masks into matlab using niftiread and then compute the Sørensen–Dice coefficient using dice function.

Say you have CompleteTumorMask.nii.gz and TumorCoreMask.nii.gz in your current directory then you can calculate the dice overlap as follows:

% Load the tumor masks
CompleteTumorMask = niftiread("CompleteTumorMask.nii.gz")
TumorCoreMask = niftiread("TumorCoreMask.nii.gz")

% Compute the dice overlap
CompleteTumor_TumorCore_Overlap = dice(CompleteTumorMask, TumorCoreMask)

I hope this helps!

Toby