creating a surface stl from 2d images

I need to create a 3D model out of ~300 CT images converted to jpg

This is what I have so far

folder = 'C:\Users\Suraj\Desktop\images\Results';
for i = 109 : 433
%     since a few numbers are missing between 109 and 433
    try
        images{i} = imread( fullfile(folder, sprintf('000%d.jpg', i) ) );
    catch
        continue;
    end
    if ndims(images{i}) > 2
        I{i} = rgb2gray(images{i});
    else
        I{i} = images{i};
    end
end
I = cat(3, I{:});
imshow(I{i});
view(3);

but i keep getting this error

Brace indexing is not supported for variables of this type.

Error in test2_3D (line 15)
imshow(I{i});

Here's a couple of sample images

[darova]

If you concantenate images in 3d dimension it wil be volume. Or am i wrong?

[Adithya Vasudevan]

Yeah, thats what I tried doing, but cant seem to get rid of this error

[KSSV]

What is size of I?

[Adithya Vasudevan]

(433-109+1)= 325 but due to missing images on certain indices actual number of images are 229 hence the try catch

[MaryD]

I'm not sure but using I = cat(3, I{:}); you're making I a 3 dimension matrix and in Imshow(I{i}), with {} you are refering to I as to a cell array.

[darova]

Is this question solved?

[Adithya Vasudevan]

MaryD, So how would i display the 3D matrix as a surface rendering

[EVANGELIA KALLOUDA]

Is this problem solved?I am facing exactly the same so if it ia possiple let me know the appropriate code for solving it.