Convert DICOM video (4D) to 3D matrix

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James Blackwell
James Blackwell 2018-2-1
评论： James Blackwell 2018-2-1
I have a DICOM ultrasound video, when I save it as a .mat file I find that it is a unit8 file with a 4D matrix. I thought the output would be a 3D matrix
When I save an individual frame and save as a .mat file I get a 2D matrix (Depth and Lateral). Which is to be expected. I am assuming the 4th dimension is an extra colour dimension that isn't needed (these are greyscale images).
What I want is to get the video and save it as a 3D matrix. Depth, Lateral and Frame number. Any help would be greatly appreciated.

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Rik
Rik 2018-2-1
If it saves your data as an RGB image, one of the dimensions will be 3. You can find the size of your matrix with the size function.
%suppose D contains your data
disp(size(D))
%suppose the result is 255 255 3 40
D=squeeze(D(:,:,1,:));
% or:
D=mean(D,3,'native');
% or even:
D=mean(D,find(size(D)==3,1),'native');

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