How to write DICOM ReferringPhysicianName metadata?

In the RT Dose DICOM files exported from MIM there is the ReferringPhysicianName structure with FamilyName, MiddleName, and GivenName structure-subset tags. How do you write data to each subset element? I have only found how to fill data on the 'first' level, which goes into the FamilyName removing the MiddleName and GivenName subsets.

For example, this code works:

dicomwrite(blurreddose,filename,doseinfo,'DoseSummationType','PLAN','SeriesDescription','Feb. 2018 blurring of planned beams',...
 'ReferringPhysicianName','Robinson','DoseUnit','RELATIVE','DoseGridScaling',num2str(DoseGridScaling),'CreateMode','copy');

but trying something like

'ReferringPhysicianName.FamilyName','Robinson','ReferringPhysicianName.GivenName','Walter'

gave the error that there was no DICOM tag with that name (as I recall). The dicomwrite documentation doesn't specify how to specify this substructure format.

Answer 1

[Walter Roberson]

I see something indicating you should use ^ between the parts.

http://dicom.nema.org/dicom/2013/output/chtml/part05/sect_6.2.html#sect_6.2.1

[Daniel Bridges]

Indeed, the parameter-value combination

'ReferringPhysicianName','Last^Given^Middle'

works. Thank you.