Creating a 3D array from multiple 2D arrays

How can I create a 3D matrix from 124 slices of 2D 256 x 256 matrices? I want to combine these to form a 256 x 256 x 124 matrix. How do I do this using a loop? Thanks!!

[Alexandra Harkai]

What do you mean by 'slices'? How did you obtain the 124 'slices'?

[George Rawlinson]

They're all different uint8 scans of a 256x256 MRI scan. I need to combine them into a 3D matrix. Thanks!

[Stephen23]

@George Rawlinson: load your data into one cell array, or simply preallocate the whole ND array and load directly into that, as this forum and the documentation already explain:

https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

Do not load into lots of variables in the workspace, because this makes accessing them slow and buggy:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval