MATLAB: If i have MxLxN matrix where N is number of slices and MxL are 2D image slices.

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If i have MxLxN matrix where N is number of slices and MxL are 2D image slices. How can i visualize that 3D matrix

You could use the slice command. There are also many 3D viewers to choose from on the File Exchange,

To slice the variable 'a', you need to use a subscript list that contains:

So, for example, in the following case, 'a' will be a sliced output:

parfor n = 1:35
  tmp = 90 * ones(1, 15);
  a(n, :) = tmp;
end

which creates 'a' as a 35x15 matrix with each element containing the value 90.

use the vector slicing to get one slice, Let V is the input volume. e.g

S=V(:,:,1);

use 'imshow' or 'imagesc' functions to view the slice as image