Dicomwrite error with metadata validation

I am trying to alter an image and then write it back to .dcm format with its original header metadata. This is an RT image radiograph file (meaning it has structure contour data included in the header attributes (50xx,3000)). Using dicomwrite, I get the error: "Error using dicom_add_attr>validate_data (line 122) Attribute (5000,3000) has wrong data type."

I have done nothing to the header data besides read it directly from the original dicom file. I need to write this image back to dicom with its header intact. Are there any options to ignore discrepancies in Matlab's validation?

Here is a test that produces the error: >>img = dicomread('RI.Field 1.dcm'); >>hdr = dicominfo('RI.Field 1.dcm'); >>dicomwrite(img,'file.dcm',hdr,'CreateMode','copy');

[release 2018a]

Answer 1

[John Mullins]

The dicominfo function was creating the structure data as type double in the Matlab workspace. Convert each structure to uint16 before passing the metadata to dicomwrite.

[Javier Sanchez Ruiperez]

Hi!

I have the same problem but i don't know how to convert structure to uint. Could you help me? I am trying to modify a DICOM tag.

Thank you

[John Mullins]

uint16(X)

[Javier Sanchez Ruiperez]

Thanks for your help! I have try it but it doesn't work, i don't know why....

This is my code:

[NombreArchivo1,RutaArchivo1,FilterIndex] = uigetfile('*.dcm','Selecciona las imágenes a analizar','Multiselect','off');

info1 = dicominfo ((NombreArchivo1));

read1 = dicomread(NombreArchivo1);

ReferencedRTPlanSequence = uint16(info1.ReferencedRTPlanSequence.Item_1.ReferencedSOPInstanceUID);

NReferencedRTPlanSequence =uint16('1.2.246.352.71.5.987333972159.266828.20200624091240');

info1.ReferencedRTPlanSequence.Item_1.ReferencedSOPInstanceUID = NReferencedRTPlanSequence;

dicomwrite(read1,strcat('C:\Users\Usuario\Desktop\'),info1, 'CreateMode','Copy');

end

[Javier Sanchez Ruiperez]

Thanks for your help.

[Javier Sanchez Ruiperez]

HI! Could you help me please? I have always the same error and i don't know how to solve it