The problem with imaging in multi-location groups.
DICOM studies are huge. A single CBCT volume runs 200 MB to 1 GB. An MRI series can be 500 MB to 2 GB. A diagnostic CT can exceed 3 GB. Multiply that across a busy practice's daily imaging volume and you get a data flow that won't travel between locations on a normal office internet circuit without taking minutes to open, sometimes longer.
So most multi-location practices accept the workaround: studies stay trapped at the location where they were originally taken. When the patient comes back to a different clinic, the provider either waits while the study trickles across a VPN, retakes the imaging, or operates without it. None of those are good for clinical quality or patient experience.
What we built.
A multi-site DICOM replication architecture designed to make 500 MB studies behave like ordinary documents that follow the patient across every clinic in the group.
Architecture
- Centralized PACS / Vendor Neutral Archive (VNA) at the primary clinic, with intelligent replication to satellite clinics
- Local-cache-first architecture so providers open studies in seconds, not minutes, even on slower clinic internet
- DICOM-tag-based routing: a study taken in Chicago is pre-fetched to the San Diego workstation before the patient walks in for the follow-up appointment
- Bandwidth-aware sync: routine studies replicate overnight when the network is idle; same-day appointments pre-fetch on demand
- 3-2-1 backup architecture with ransomware-resistant immutable cloud copies — the imaging archive is a top target in healthcare ransomware
Compliance & Security
- HIPAA-compliant: AES-256 encryption at rest, TLS 1.3 in transit
- Per-study audit logs: who accessed which study, from which workstation, at what time
- Business Associate Agreements with every vendor in the imaging path
- Documented Security Risk Analysis covering the imaging system specifically
Vendor Integration
- Vendor-neutral by design: integrates with Carestream Dental, Dexis, Romexis, MIPACS, Sectra, GE Centricity, Fujifilm Synapse, Philips, and most modality consoles
- Integrated into the practice management / EHR system so the study appears alongside the patient chart, not in a separate application the staff has to remember to open
What it demonstrates: We solve one of the hardest cross-location problems in healthcare IT — making large imaging files behave like ordinary documents that travel with the patient. Most multi-location groups either accept that studies are trapped at the location of origin, or pay a cloud-PACS vendor that adds latency, per-GB storage fees, and a third-party dependency without solving the core continuity problem. We solve continuity first and keep the cloud as a backup tier rather than the primary path.