CHARACTERISING THE EOS SLOT-SCANNING SYSTEM WITH THE EFFECTIVE DETECTIVE QUANTUM EFFICIENCY
| Autor: | Jean Michel Létang, P. Monnin, F. R. Verdun, A. H. Clavel, A. Darbon |
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| Přispěvatelé: | Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL) |
| Rok vydání: | 2015 |
| Předmět: |
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Radiation Radiation Dosage Sensitivity and Specificity Imaging phantom 030218 nuclear medicine & medical imaging Labex PRIMES Detective quantum efficiency 03 medical and health sciences Kerma 0302 clinical medicine Optics Imaging Three-Dimensional categₛt2i [INFO.INFO-IM]Computer Science [cs]/Medical Imaging Figure of merit Radiology Nuclear Medicine and imaging Imagerie tomographique et thérapie par rayonnement Physics Radiological and Ultrasound Technology business.industry Phantoms Imaging Detector Public Health Environmental and Occupational Health Reproducibility of Results General Medicine Equipment Design Equipment Failure Analysis Radiographic Image Enhancement 030220 oncology & carcinogenesis Radiographic Image Interpretation Computer-Assisted Tomography business Tomography X-Ray Computed Beam (structure) |
| Zdroj: | Radiation Protection Dosimetry Radiation Protection Dosimetry, Oxford University Press (OUP), 2015, ⟨10.1093/rpd/ncv451⟩ |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncv451⟩ |
| Popis: | International audience; As opposed to the standard detective quantum efficiency (DQE), effective DQE (eDQE) is a figure of merit that allows comparing the performances of imaging systems in the presence of scatter rejection devices. The geometry of the EOS\texttrademark slot-scanning system is such that the detector is self-collimated and rejects scattered radiation. In this study, the EOS system was characterised using the eDQE in imaging conditions similar to those used in clinical practice: with phantoms of different widths placed in the X-ray beam, for various incident air kerma and tube voltages corresponding to the phantom thickness. Scatter fractions in EOS images were extremely low, around 2 % for all configurations. Maximum eDQE values spanned 9\textendash14.8 % for a large range of air kerma at the detector plane from 0.01 to 1.34 \textmuGy. These figures were obtained with non-optimised EOS setting but still over-performed most of the maximum eDQEs recently assessed for various computed radiology and digital radiology systems with antiscatter grids. |
| Databáze: | OpenAIRE |
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