How to convert .mat file to .dcm format?

I have imported a RTplan file to Matlab in. dcm format, and I use both functions (dicomread & dicominfo) to work on this file. Now after processing this file in .mat format , I want to convert it to .dcm format , HOW to do it?

Answer 1

[Simon Chan]

file = dicomread(fileName);
imheader = dicominfo(fileName);
dicomwrite(file,'RP.newname.dcm',imheader, 'CreateMode', 'copy');

[Reem Alahmadi]

thank you for answering my question.

I tried and this is the result :

>> file = dicomread('B');
imheader = dicominfo('B');
dicomwrite(file,'RP.newname.dcm',imheader, 'CreateMode', 'copy');

Error using images.internal.dicom.getFileDetails (line 14)
Unable to load file "B".

Error in dicomread>newDicomread (line 197)
fileDetails = images.internal.dicom.getFileDetails(filename, verifyIsDICOM);

Error in dicomread (line 91)
[X, map, alpha, overlays] = newDicomread(msgname, frames, useVRHeuristic);

[Simon Chan]

It depends on how your .mat file is processed.

header = dicominfo('RP_original.dcm');              % RP_original.dcm is the original DICOM file
save('header.mat','header');                        % Save the DICOM header into a header.mat file
%
% Then you modify the DICOM header information in your scripts using the
% above mentioned mat file
%
info = dicomread('RP_original.dcm');                % Read the DICOM image,but it is an empty array since it is a RT Plan
%
new_header = load('header.mat');                    % Load the modified mat file
% dicomwrite into a new file name
dicomwrite(info, 'RP_newname.dcm', new_header.header,'CreateMode','Copy');

If your dicomread process also save as a .mat file, then the following scripts are also required to replace the last command in the above scripts.

save('info.mat','info');
new_info = load('info.mat');
% dicomwrite into a new file name
dicomwrite(new_info.info, 'RP_newname.dcm', new_header.header,'CreateMode','Copy');

[Reem Alahmadi]

Thank you so much for your help , it works.

[ziwei fu]

Hello，it has warning like this:

warning: The 'SOPClassUID' and 'ObjectType' parameters are ignored when 'CreateMode' is 'copy'.

Someting has lost,how can i fix it?

Thanks!

[Walter Roberson]

You should rarely be copying SOPClassUID as that is intended to be a global unique identifier. You would only copy it if the new file is intended to replace the existing file.

[Walter Roberson]

I do not know why the routine does not copy ObjectType; the documentation sort of implies that it should copy it.

You can pull it out of dicominfo and write it explicitly using the 'ObjectType' option

[ziwei fu]

My new RTplan cannot import into TPS with CT and RTStructure，did I miss some details?