An Automated DICOM Database Capable of Arbitrary Data Mining (Including Radiation Dose Indicators) for Quality Monitoring |
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Authors: | Shanshan Wang William Pavlicek Catherine C Roberts Steve G Langer Muhong Zhang Mengqi Hu Richard L Morin Beth A Schueler Clinton V Wellnitz and Teresa Wu |
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Institution: | (1) School of Computing, Informatics and Decision Systems Engineering, Arizona State University, 699 S. Mills Ave., Tempe, AZ 85287, USA;(2) Department of Radiology, Mayo Clinic Arizona, 13400 East Shea Blvd, Scottsdale, AZ 85258, USA;(3) Department of Radiology, Mayo Clinic Rochester, 200 First St. SW, Rochester, MN 55905, USA;(4) Department of Radiology, Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL 32224, USA |
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Abstract: | The U.S. National Press has brought to full public discussion concerns regarding the use of medical radiation, specifically x-ray computed tomography (CT), in diagnosis. A need exists for developing methods whereby assurance is given that all diagnostic medical radiation use is properly prescribed, and all patients’ radiation exposure is monitored. The “DICOM Index Tracker©” (DIT) transparently captures desired digital imaging and communications in medicine (DICOM) tags from CT, nuclear imaging equipment, and other DICOM devices across an enterprise. Its initial use is recording, monitoring, and providing automatic alerts to medical professionals of excursions beyond internally determined trigger action levels of radiation. A flexible knowledge base, aware of equipment in use, enables automatic alerts to system administrators of newly identified equipment models or software versions so that DIT can be adapted to the new equipment or software. A dosimetry module accepts mammography breast organ dose, skin air kerma values from XA modalities, exposure indices from computed radiography, etc. upon receipt. The American Association of Physicists in Medicine recommended a methodology for effective dose calculations which are performed with CT units having DICOM structured dose reports. Web interface reporting is provided for accessing the database in real-time. DIT is DICOM-compliant and, thus, is standardized for international comparisons. Automatic alerts currently in use include: email, cell phone text message, and internal pager text messaging. This system extends the utility of DICOM for standardizing the capturing and computing of radiation dose as well as other quality measures.Key words: Data extraction, medical informatics applications, radiation dose, database management systems, knowledge base |
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