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25 April 2000 Evaluation of a fluoroscopy mode for a CCD-based radiographic sensor
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We evaluate a fluoroscopy mode for a CCD-based digital radiography system. It is a modular system based on known technologies (scintillator screen, lenses, fast and high resolution CCD cameras) and optimized for medical purpose. The detector can provide different acquisition modes: a large field (43 cm) and high resolution (pixel size 105 micrometer) mode, but also fluoroscopy modes: acquisition field size 21 cm, pixel size 210 micrometer or 420 micrometer, image rate of 6 or 10 images/s. We investigate the image quality for a fluoroscopy mode (pixel size 210 micrometer) through two criteria: Modulation Transfer Function (MTF) and Detection Quantum Efficiency (DQE) as function of spatial frequency. These results show that it is possible to have a fluoroscopy mode at a low frame rate on a CCD-based sensor with an interesting image quality. Our detector will be the first CCD- based sensor that will provide a fluoroscopy mode in addition to a high resolution acquisition mode.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Regis Guillemaud and Laurent Simon "Evaluation of a fluoroscopy mode for a CCD-based radiographic sensor", Proc. SPIE 3977, Medical Imaging 2000: Physics of Medical Imaging, (25 April 2000);

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