Varex Imaging’s amorphous silicon-based detectors are the benchmark for radiography in industrial, medical and dental applications. 250, No. At a system dose equivalent to 400 speed, the DQE of the digital system was a factor of two larger than the DQE of a storage phosphor or screen-film system within the entire spatial frequency range between zero and the Nyquist limit of 3.5 line pairs per millimeter. During operation, the X – ray photon-excited scintillator has produced fluorescence, and the spectral range of the fluorescence is around 550 nm, which is the sensitivity peak of amorphous silicon. I. Modulation transfer functiona), Intercomparison of methods for image quality characterization. 3, 27 August 2004 | Medical Physics, Vol. In addition, our company specializes in producing image intensifier TV systems. The contrast and scatter content of images acquired with the FPD were equivalent to those acquired with the storage phosphor system. 27, No. 28, No. The result is non-cartridge design that provides for toner replenishment without replacing the entire unit. Amorphous silicon is form of silicon, the second most abundantly occurring natural element on Earth. 33, No. For the first time, a team at HZB has identified the atomic substructure of amorphous silicon with a resolution of 0.8 nanometres using X-ray and neutron scattering at BESSY II … 1, 3 September 2008 | Journal of Digital Imaging, Vol. 5, 30 November 2016 | Medical Physics, Vol. 65, No. Conventional images were compared with digital images acquired with equal dose (2.5 microGy) and with 50% dose reduction. 227, No. During the last 35 years, thermal imaging has emerged as a critical enabling technology for modern warfare. The active matrix size of 3000. 64, No. 6, 30 November 2016 | Medical Physics, Vol. 4, Insight - Non-Destructive Testing and Condition Monitoring, Vol. 2, 30 November 2016 | Medical Physics, Vol. MARTIN SPAHN;MICHAEL STROTZER;MARKUS VÖLK;STEFAN BÖHM;BERNHARD GEIGER;GERHARD HAHM;STEFAN FEUERBACH; From *Siemens AG, Medical Engineering, Angio, Fluoro, and Rad Systems Development, Forchheim, Germany, and the †Department of Diagnostic Radiology, University Hospital Regensburg, Regensburg, Germany. Noise power spectruma), Imaging properties of digital magnification radiography, Image Quality and Detection Performance of a Direct Digital Radiography System, Experimental Evaluation of a Portable Indirect Flat-Panel Detector for the Pediatric Chest: Comparison with Storage Phosphor Radiography at Different Exposures by Using a Chest Phantom1, Chest Radiography with a Flat-Panel Detector: Image Quality with Dose Reduction after Copper Filtration1, Portable Flat-Panel Detector for Low-Dose Imaging in a Pediatric Intensive Care Unit, Comparison of Eight Different Digital Chest Radiography Systems: Variation in Detection of Simulated Chest Disease, Measurement of the detective quantum efficiency in digital detectors consistent with the IEC 62220-1 standard: Practical considerations regarding the choice of filter material, Comparative Scatter and Dose Performance of Slot-Scan and Full-Field Digital Chest Radiography Systems1, Computed Radiography and Direct Radiography, Chest Radiography with a Digital Flat-Panel Detector: Experimental Receiver Operating Characteristic Analysis1, Physical characteristics of a full-field digital mammography system, Fundamental imaging characteristics of a slot-scan digital chest radiographic system, Solid-state fluoroscopic imager for high-resolution angiography: Physical characteristics of an 8 cm×8 cm experimental prototype, Evaluation of the imaging properties of an amorphous selenium-based flat panel detector for digital fluoroscopy, Digital Slot-Scan Charge-coupled Device Radiography versus AMBER and Bucky Screen-Film Radiography for Detection of Simulated Nodules and Interstitial Disease in a Chest Phantom1, Evaluation of the use of six diagnostic X-ray spectra computer codes, a−Si:H/CsI(Tl) flat-panel versus computed radiography for chest imaging applications: image quality metrics measurement, Lumbar Spine Radiography: Digital Flat-Panel Detector versus Screen-Film and Storage-Phosphor Systems in Monkeys as a Pediatric Model1, Dose Reduction in Patients Undergoing Chest Imaging: 117, No. PERFORMANCE CHARACTERIZATION OF AMORPHOUS SILICON DIGITAL DETECTOR ARRAYS FOR GAMMA RADIOGRAPHY Rajashekar Venkatachalam 1, Manoharan V1, Raghu C , Venumadhav Vedula1, Debasish Mishra2 1 GE- lob aR esea rch C nt , B g I dia 2 GE- lob aR e sea rch C nt , Ni ky u U.S.A Abstract This paper reports the performance characteristics of a-Si detectors with Ir-192 gamma source. 4, Technology in Cancer Research & Treatment, Vol. The measurement of DQE yielded a high value of 70% at zero spatial frequency. 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