It seems like the edge server is available for free as an open-source stack, in a VM.
https://www.rsna.org/practice-tools/data-tools-and-standards/image-share-validation-program/developer-tools
Learn about obtaining and sharing your medical images.images
Open-Source certified EHR
FHIR API
More robust and active alternative to the stale Nextcloud app, Kailona.
Requires a FHIR server; seems to be abandoned
Open Source software:
https://thairis.net/
https://librehealth.io/demos/
How do they communicate with PACS, acquisition systems, EHRs...?
https://www.ramsoft.com/pacs-radiology-information-systems/
DICOM (Digital Imaging and Communications in Medicine) is a standard format that enables medical professionals to view, store, and share medical images irrespective of their geographic location.
OpenSource:
https://medevel.com/10-open-source-dicom-viewers/
Aliza: https://www.aliza-dicom-viewer.com/download/download_alizams
ClearCanvas: https://clearcanvas.github.io/
MicroDicom (free for non-commercial use) https://www.microdicom.com/
about the results of the 21st Century Cures Act
Like other industries, health care organizations exchange information according to a set of standards. Standards are agreed-upon methods for connecting systems together. Standards may pertain to security, data transport, data format or structure, or the meanings of codes or terms.
Standards are defined, updated, and maintained by standards development organizations (SDOs) through a collaborative process involving the audience that will be using the standards.