how to modify stored dcm files

Question

I have the need to mopdify the information of patient,study,series,instance,and I have done this by putting information to dataset that stored in database.Now my question is that the information stored in database does has been modified but the dcm files stored in pacs can't modified.Is there any way to modify the dcm files at the same time?

Answer 1

I could be wrong, but I do not believe dcm4chee changes the images when you edit the fields through the web interface. Instead what it does is it modifies the fields in the data base. When an image is retrieved from the dcm4chee pacs, it will prepare and send the modified images. At that point in time it creates a new image header (updated with changes made through the web UI and the changes required because dcm4chee handled the images). The retriever will then get the modified set of images, dcm4chee will continue to store the original images.

To get the modified images issue a C-STORE request and have dcm4chee send the images to another client or pacs. That system will receive the modified images.

Answer 2

If you have DCM4CHEE 2.17.x, then you should be able to edit some information. Go onto the web interface for your installation and look for the Edit [Patient/Study/Series/Instance] Attributes icon (looks like a document with a pencil). If you click on that, you should be able to enter new values for some of the items.

Most PACS will ignore a storage request if they already have the identical SOP Instance UID value. So, another method to change the data is to use a toolkit to modify the fields you want, and then generate new UID values for the images (and it's a good idea to do the same for the study and series UID values too). This will create duplicate entries, but with different values.