I have to develop a SCU (Service Class User) application for querying PACS and retrieve the DICOM images.
Should I use C-GET or C-MOVE DICOM protocol to retrieve the images?
You can use either, but the preferred is C-Move.
The point is not only about security, but about implementation.
In C-MOVE, the SCP list the supported transfer syntaxes for each image matching the previous query. Then the SCU agree with any.
On the other side, in the C-GET, the SCU list its supporting transfer syntaxes before any query is made, and the SCP has to pick any and compromise to send whatever the SCU ask for in that format.
So, the C-GET implementation for PACS is harder and more complex since it has to be able to encode anything to anything. While in the C-MOVE is the client who has to be able to decode and show anything which is much easier...
来源：https://stackoverflow.com/questions/1957005/dicom-c-get-vs-c-move