Enterprise Imaging and Vendor Neutral Archives Flashcards

What is the fundamental architectural difference between a traditional PACS and a VNA?

Answer: PACS typically uses vendor-specific proprietary storage formats; VNA provides open, standards-based storage enabling multi-vendor access

Traditional PACS solutions often rely on proprietary storage tied to one vendor, while VNA uses open standards allowing images to be accessed by any compliant system.

Which method provides secure DICOM image transmission over the internet or wide-area networks?

Answer: DICOM over TLS or DICOMweb over HTTPS

DICOM over TLS (Transport Layer Security) or DICOMweb over HTTPS encrypts image transmissions to ensure confidentiality and integrity over public networks.

What does 'image lifecycle management' in a VNA refer to?

Answer: Policies governing image creation, active storage, long-term archiving, retrieval, and eventual disposition per retention rules

Image lifecycle management defines rules for how images are handled from initial acquisition through archiving tiers and final disposition according to regulatory retention requirements.

What is 'de-identification' of medical images and why is it required?

Answer: Removing or obscuring patient-identifying information from images and headers to enable use without exposing PHI

De-identification removes PHI from DICOM images and metadata to comply with HIPAA when images are used for research, education, or cross-organizational sharing.

What is the purpose of a national Image Exchange Network such as Carequality or CommonWell in enterprise imaging?

Answer: To enable patients and providers to share clinical images securely across different health systems nationwide

National image exchange networks like Carequality enable secure, standards-based interoperability for sharing clinical images across different health systems and EHR platforms.

What is a 'study routing rule' in a VNA system?

Answer: A configurable rule that automatically directs incoming studies to specific destinations based on DICOM attribute values

Study routing rules evaluate incoming DICOM attribute values — such as modality, AE title, or body part — to automatically route images to the appropriate archive, viewer, or department.

Which regulatory framework primarily drives long-term retention policies for medical imaging archives in the United States?

Answer: State and federal laws (including CMS requirements of minimum 5 years for adults) combined with ACR practice guidelines

Medical image retention is governed by state laws and federal CMS requirements mandating minimum retention periods — typically 5 years for adult records and longer for minors — alongside ACR guidelines.