How to view the title image classification for 3D images?

Dear all,

I have done trained the deep lerning clasification.

so I want to test one of the data.

%testing
testing = niftiread('test.nii');
out = classify(trainedNetwork_1,testing,classoutput);
figure, imshow3D(testing)
title (string(out))

How to view the title classification for 3D images? (as example picture as attached in red box)

becuse my command the title not appear

the function of imshow3D was attached.