Issue with writing DICOM images to a folder ('Could not open folder for writing' error)

I have a script to apply a manual segmentation to a set of DICOM images in a for loop. I want to write the segmentation for each image to a specific (initially empty) folder.

baseFileName = sprintf('%s_%d.dcm', cnt); 
fullFileName = fullfile(pwd, 'Project_Segmentations', baseFileName); 
dicomwrite(segmentation, fullFileName);

The error message I'm getting is:

Error using dicom_open_msg (line 31)
Could not open "Project\DICOMs_Project\_" for writing
Error in dicomwrite>write_stream (line 660)
file = dicom_open_msg(file, 'w');
Error in dicomwrite>encodeAndWriteAttrs (line 325)
msg = write_stream(destination, data_stream);
Error in dicomwrite>write_message (line 282)
    encodeAndWriteAttrs(attrs, options, filename, specificCharacterSet);
Error in dicomwrite (line 208)
    [status, options] = write_message(X, filename, map, metadata, options);
Error in ManualSegmentationFull (line 80)
dicomwrite(segmentation, fullFileName);

Thanks in advance for any advice you may have!

Answer 1

[Cameron Harris]

The problem seemed to be down to trying to use, I think it must have been creating an invalid file name:

'%s_%d.dcm'

This code actually works fine, writing to the correct folder, when I simply use:

baseFileName = sprintf('Segmentation_%d.dcm', cnt);
fullFileName = fullfile(pwd, 'Project_Segmentations',baseFileName); 
% Write the DICOM segmentation to the folder. 
dicomwrite(segmentation, fullFileName);

What I actually want is for the DICOMs to be written with the file name format of 'OrginalFileName_Segmentation.dcm'. If anyone can advise me on this it'd be really helpful, but for now the file name format I'm using is acceptable for my application.