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SU-E-I-50: The ACR CT Dose Index Registry: Implementation Challenges and Preliminary Data.

K Kanal1, D Zamora1, C Price1

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PubMed
Summary

Institutions can register for the American College of Radiology (ACR) CT Dose Index Registry (DIR) by overcoming technical challenges. This registry facilitates dose data mining and establishes national benchmarks for CTDIvol and DLP.

Keywords:
Computed tomographyComputer softwareData analysisData miningDigital image processingDosimetryMedical imagingPhysicists

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Area of Science:

  • Medical Imaging
  • Radiology Informatics

Background:

  • The American College of Radiology (ACR) CT Dose Index Registry (DIR) aims to collect and analyze CT dose data.
  • Accurate dose reporting is crucial for patient safety and quality improvement in CT imaging.

Purpose of the Study:

  • To successfully register an institution into the ACR CT Dose Index Registry (DIR).
  • To identify and discuss technical and implementation challenges encountered during the registration process.
  • To review preliminary dose data from the registry.

Main Methods:

  • Utilized TRIAD software, the ACRIN's image acquisition and management system, for transmitting DICOM structured dose reports.
  • Installed TRIAD on a virtual machine server to send anonymized and encrypted dose data from 6 CT scanners to the ACR.
  • Collaborated with IT, PACS personnel, and physicists, addressing challenges like software installation, data transmission, and protocol unification via the Radlex playbook.

Main Results:

  • Successfully transmitted and analyzed CT dose data (CTDIvol and DLP) to the ACR.
  • Received the first comparative report, showing institutional median CTDIvol and DLP for CT head exams (44 mGy and 736 mGy-cm) against national averages (64 mGy and 844 mGy-cm).

Conclusions:

  • The ACR CT DIR is a valuable tool for dose data mining and establishing national CT dose benchmarks.
  • Sharing institutional experiences with DIR registration can help other facilities anticipate and overcome implementation challenges.