How to get all the data in load mri?

when using the following code

>>load mri
>>D= squeeze (D);
>>Ds = smooth3(D);
>>isosurface(Ds,5)

the last command only returns vertices and faces

how can I get cdata(color and vertex function value) of the mri?

I tried [f,v,c]=isosurface(DS,5) but it does not work

from vertices I can get X,Y,Z

I want to reach the following

isosurface(X,Y,Z,V)

How can I get V?????

[Walter Roberson]

Duplicate is http://www.mathworks.co.uk/matlabcentral/answers/88986-how-to-get-mri-cdata-when-using-isosurface-returns-only-faces-and-vertices