Why is DICOMINFO not displaying all the metadata

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Paul Hannon 2019-9-25

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回答： Pranjal Kaura 2021-7-28

I was able to successfully update the metadata field "AcquisitionDateTime" in my DICOM Image using the DICOMANON function with update and suppling a struct containinng the metadata field name and new value.

However, I am having a problem trying to do the same update with the metadata field "FrameAcquisitionDatetime" in my DICOM image.

I noticed that DICOMDISP will display the FrameAquisitionDatetime metadata field and value (actually several times because I think there are multiple frames in the image) but DICOMINFO does not display the field.

When I issue the DICOMANON function to update this field I do not get an error message. It seems like it works but when I issue the DICOMDISP function on the new dicom file after the update nothing gets updated.

I am able to find the "FrameAcquisitionDatetime" metadata field in the dicom data dictionary file. It is a standard metadata field. Maybe it is in a struct in the metadata and requires specual syntax to update it.

Please help.

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Answer 1

Pranjal Kaura 2021-7-28

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Hey Paul,

It is my understanding that you want to update the 'FrameAcquisitionDatetime' metadata in a DICOM image. You can do the same using the dicomanon function.

Here's a code snippet for the same

dicomanon('OriginalFile.dcm', 'UpdatedFile.dcm', 'update', struct('FrameAcquisitionDatetime', '<your_value>'))

If you're unable to find the 'FrameAcquisitionDatetime', it could be a private metadata field. Creating a custom DICOM dictionary might solve your problem.