Investigation of possible methods for equipment self-tests in digital radiology
| Autor: | H. H. E. Idris, Johannes Zoetelief, J. T. M. Jansen |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Quality Control
medicine.medical_specialty Image quality Radiography Interventional Imaging phantom Staff Workload Quality (physics) Digital radiology Optical transfer function medicine Image Processing Computer-Assisted Humans Radiology Nuclear Medicine and imaging Medical physics Simulation Radiation Models Statistical Radiological and Ultrasound Technology business.industry Phantoms Imaging X-Rays Public Health Environmental and Occupational Health General Medicine Equipment Design Radiographic Image Enhancement Transmission (telecommunications) Computer-Aided Design business Radiology |
| Zdroj: | Radiation protection dosimetry. 117(1-3) |
| ISSN: | 0144-8420 |
| Popis: | Quality control in digital radiology can be time-consuming. Equipment self-tests may significantly decrease staff workload. The two most essential parameters for radiology systems are image quality and patient dose. Concerning patient dose, information on the dose-area product (DAP) values generally forms the basis for assessment of patient dose. DAP-values can be measured using a transmission ionisation chamber or calculated from equipment settings. In the present study, various image quality parameters were derived using a contrast-detail (C-D) phantom. The investigation included a computer-aided assessment of C-D images, which produced various parameters, and also parameters based upon scoring by human observers. In addition, another parameter was calculated from modulation transfer function (MTF) measurements. The automatically calculated parameters showed good correlation with human readings, although the number of X-ray systems studied is still limited. We propose a combined evaluation of DAP and automatically calculated C-D or MTF parameters for equipment self-tests. |
| Databáze: | OpenAIRE |
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