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Proceedings Paper

DICOM structured report to track patient's radiation dose to organs from abdominal CT exam
Author(s): Craig Morioka; Adam Turner; Michael McNitt-Gray; Maria Zankl; Frank Meng; Suzie El-Saden
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Paper Abstract

The dramatic increase of diagnostic imaging capabilities over the past decade has contributed to increased radiation exposure to patient populations. Several factors have contributed to the increase in imaging procedures: wider availability of imaging modalities, increase in technical capabilities, rise in demand by patients and clinicians, favorable reimbursement, and lack of guidelines to control utilization. The primary focus of this research is to provide in depth information about radiation doses that patients receive as a result of CT exams, with the initial investigation involving abdominal CT exams. Current dose measurement methods (i.e. CTDIvol Computed Tomography Dose Index) do not provide direct information about a patient's organ dose. We have developed a method to determine CTDIvol normalized organ doses using a set of organ specific exponential regression equations. These exponential equations along with measured CTDIvol are used to calculate organ dose estimates from abdominal CT scans for eight different patient models. For each patient, organ dose and CTDIvol were estimated for an abdominal CT scan. We then modified the DICOM Radiation Dose Structured Report (RDSR) to store the pertinent patient information on radiation dose to their abdominal organs.

Paper Details

Date Published: 25 March 2011
PDF: 6 pages
Proc. SPIE 7967, Medical Imaging 2011: Advanced PACS-based Imaging Informatics and Therapeutic Applications, 79670X (25 March 2011); doi: 10.1117/12.878277
Show Author Affiliations
Craig Morioka, VA Greater Los Angeles Healthcare System (United States)
Univ. of California, Los Angeles (United States)
Adam Turner, Univ. of California, Los Angeles (United States)
Michael McNitt-Gray, Univ. of California, Los Angeles (United States)
Maria Zankl, Helmholtz Zentrum München GmbH (Germany)
Frank Meng, VA Greater Los Angeles Healthcare System (United States)
Suzie El-Saden, VA Greater Los Angeles Healthcare System (United States)
Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 7967:
Medical Imaging 2011: Advanced PACS-based Imaging Informatics and Therapeutic Applications
William W. Boonn; Brent J. Liu, Editor(s)

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