'horzcat' error when using dicomread() within a for-loop

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Roman Hochuli
Roman Hochuli 2011-2-21
编辑： Walter Roberson 2017-1-22
Hi
I have a set of 460 DICOM files that I would like to read in one-by-one, subtract 1000 from each pixel, and write them out as DICOM files. I have tried the following code, but continue to get an errror saying "CAT arguments dimensions are not consistent":
I=zeros(512,512);
for i=0:459
I=dicomread(['IMG (' int2str(i) ').dcm']);
I=im2double(I);
I=I-(1000*ones(size(I)));
I=int16(I);
dicomwrite([I,'IMG (' int2str(i) '.dcm'])
end;
I assume this problem comes from a line in dicomwrite(), but I can't work out how to change this.
Any suggestions would be much appreciated.
Thanks,
Roman

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采纳的回答

Richard
Richard 2011-2-21
In the call to dicomwrite you have tried to concatenate the matrix of pixel data (I) with the name of the file - basically, you put the "I," in the wrong place. Also, I noticed that you've removed a ")" in the output filename that you probably meant to keep? Try this to write back to the same file:
dicomwrite(I, ['IMG (' int2str(i) ').dcm'])

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