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Qualifying the use of RIS data for patient dose by comparison with DICOM header data.

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  • 1Intergrated Radiological Services Limited, Liverpool, UK. ryanwilde@irs-limited.com

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|October 8, 2011
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Summary

Radiology Information System (RIS) data offers a viable alternative for patient dose audits, providing sufficient accuracy and unique advantages over Digital Imaging and Communication in Medicine (DICOM) data alone.

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Area of Science:

  • Medical Physics
  • Radiology Informatics
  • Health Informatics

Background:

  • A 2008 system for patient dose audits utilized Radiology Information System (RIS) data, but suffered from user-entered data quality issues.
  • Digital Imaging and Communication in Medicine (DICOM) header data has demonstrated high accuracy for dose audits.
  • Existing methods highlight the need for improved data accuracy and efficiency in patient dose auditing.

Purpose of the Study:

  • To evaluate the viability and advantages of using RIS data for patient dose audits compared to DICOM header data.
  • To develop and implement a new system for easily extracting DICOM header data.
  • To compare the consistency and utility of data fields from both RIS and DICOM sources.

Main Methods:

  • Developed a new system to extract header data from DICOM images.
  • Collected data for common examinations using both RIS and DICOM sources.
  • Performed a result-by-result comparison of RIS and DICOM data for consistency and unique field value.

Main Results:

  • RIS data, while less accurate than DICOM, provides sufficient accurate data for dose audits.
  • RIS data offers distinct advantages over relying solely on DICOM data.
  • Identified inconsistencies in common fields between RIS and DICOM, alongside valuable unique data fields.

Conclusions:

  • RIS data presents a practical and advantageous alternative for patient dose audits.
  • A hybrid approach, potentially utilizing Modality Performed Procedure Step (MPPS), may offer the optimal solution ('best of both worlds').
  • Further investigation into MPPS integration is recommended for comprehensive dose auditing.