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Using MIRC as a Research Data Collector. Lawrence Tarbox, Ph.D. Electronic Radiology Lab Mallinckrodt Institute of Radiology Washington University in St. Louis School of Medicine. Requisite Financial Disclosure.

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using mirc as a research data collector

Using MIRC as a Research Data Collector

Lawrence Tarbox, Ph.D.

Electronic Radiology Lab

Mallinckrodt Institute of Radiology

Washington University in St. Louis School of Medicine

requisite financial disclosure
Requisite Financial Disclosure
  • The author receives financial support from RSNA for work in IHE testing tools and connectathon management.
  • The author consults with Siemens Medical Solutions on standardization issues (DICOM).
  • The author’s retirement fund currently includes a small amount of Siemens, AG stock.

None of the above impacts today’s topic.

research dataset acquisition
Research Dataset Acquisition

From John Perry’s Presentation:

  • MIRC feature developed with Mallinckrodt Institute of Radiology
  • Allows internal researchers to acquire DICOM images from modalities, store and manage them without using the clinical PACS
    • Bridges internal networks
    • Tracks access of PHI for HIPAA compliance
problem statement
Problem Statement
  • Clinical scanners are often used for research purposes
    • Researcher-directed acquisitions
    • Clinical cases of research interest
  • Not all researchers have access to the clinical PACS
  • Research computer systems and networks often are outside of the HIPAA protected environment
current solution
Current Solution
  • Whenever possible, techs are asked to enter the researcher’s name as the “referring physician”
  • Techs asked to not put PHI in study/series descriptions
  • Scanners are configured with a MIRC server as a DICOM destination, making it easy for techs to send research data to the MIRC server
  • MIRC server remains in the HIPAA protected environment
  • Researchers are given controlled access to the MIRC server to pick up their data
research dataflow

Hospital Network

Medical School Network

Retrieve de-identified images

Images containing PHI

Retrieve de-identified images via VPN

Open Network

Research Dataflow
mirc setup
MIRC Setup
  • On receipt, DICOM data is stored both
    • as received (potentially with PHI)
    • deidentified/anonymized (no PHI)
  • Research data is not published automatically (i.e., is not available to other MIRC servers)
  • Protected Health Information (PHI) is not shown in query results list
  • User login required to access data
  • Potential access to PHI is logged for audit purposes, as required by HIPAA
hipaa audit logs
HIPAA Audit Logs
  • No audit log entry for queries, since no PHI is shown in list returned
  • Patient data accessed audit log entry when user clicks on a query list entry
  • Patient data export audit log entry if user downloads non-deidentified data
  • Logs both
    • stored locally on the MIRC server, and
    • optionally transmitted via http to a log collection service (RFC 3881 format)
slide9

Most Researchers just click here

Queries are allowed, but are limited

slide10

Title includes modality and date

XML template specifies content of entries

Author is referring physician

“Accessed” audit record generated when title is clicked, logon required

slide11

XML template specifies layout and content

“Export” audit record generated when zip file of DICOM objects is downloaded

audit log examples
Audit Log Examples

2005-01-13T18:25:04 - Access by MIRCuser @10.39.168.180

SIUID: 1.2.124.113532.128.252.220.117.20030306.133901.10766096

Pt ID: 05-10786-9

Name: PATIENT^NAME

2005-01-13T18:26:14 - Export by MIRCuser @10.39.168.180

SIUID: 1.2.124.113532.128.252.220.117.20030306.133901.10766096

Pt ID: 05-10786-8

Name: PATIENT^NAME

discussion
Discussion
  • Over 90 GB of data have gone through the collector
  • 10 to 20 studies a week
  • Expanding to include raw data (sinograms) from scanners