PURPOSE: The aim of this study was to determine whether a high-resolution digital radiography system that was originally developed for mammography could be used for general radiographic purposes by means of a phantom test. MATERIALS AND METHODS: This system includes an X-ray tube with a smaller focal point than is generally used for general radiography, and a computed radiography (CR) system to provide the highest spatial resolution. The imaging object and CR plate are intentionally separated to capture an edge-enhancing effect that is the result of a phase-shift (phase contrast) of the X-rays. RESULTS: This system showed greater sharpness and spatial resolution, as well as an equal level of contrast resolution compared to a conventional X-ray system. The image sharpness in this system appears to be at least partially attributable to an edge-enhancing effect produced by the phase-contrast effect, which occurs when X-rays pass the surfaces of objects. CONCLUSION: This technique may be suitable for clinical use and may contribute to improved image-quality in general radiography.
PURPOSE: The aim of this study was to determine whether a high-resolution digital radiography system that was originally developed for mammography could be used for general radiographic purposes by means of a phantom test. MATERIALS AND METHODS: This system includes an X-ray tube with a smaller focal point than is generally used for general radiography, and a computed radiography (CR) system to provide the highest spatial resolution. The imaging object and CR plate are intentionally separated to capture an edge-enhancing effect that is the result of a phase-shift (phase contrast) of the X-rays. RESULTS: This system showed greater sharpness and spatial resolution, as well as an equal level of contrast resolution compared to a conventional X-ray system. The image sharpness in this system appears to be at least partially attributable to an edge-enhancing effect produced by the phase-contrast effect, which occurs when X-rays pass the surfaces of objects. CONCLUSION: This technique may be suitable for clinical use and may contribute to improved image-quality in general radiography.
Authors: F Arfelli; V Bonvicini; A Bravin; G Cantatore; E Castelli; L D Palma; M D Michiel; M Fabrizioli; R Longo; R H Menk; A Olivo; S Pani; D Pontoni; P Poropat; M Prest; A Rashevsky; M Ratti; L Rigon; G Tromba; A Vacchi; E Vallazza; F Zanconati Journal: Radiology Date: 2000-04 Impact factor: 11.105
Authors: E D Pisano; R E Johnston; D Chapman; J Geradts; M V Iacocca; C A Livasy; D B Washburn; D E Sayers; Z Zhong; M Z Kiss; W C Thomlinson Journal: Radiology Date: 2000-03 Impact factor: 11.105
Authors: F Arfelli; V Bonvicini; A Bravin; G Cantatore; E Castelli; L Dalla Palma; M Di Michiel; R Longo; A Olivo; S Pani; D Pontoni; P Poropat; M Prest; A Rashevsky; G Tromba; A Vacchi Journal: Radiology Date: 1998-09 Impact factor: 11.105
Authors: T Sato; N Nakamoto; T Abe; Y Fukushima; Y Tomaru; Y Sakata; M Nakazawa; A Nakamoto; H Kawasaki; Y Wada; H Ohara; R Araki; J Tanaka; T Yoda Journal: Dentomaxillofac Radiol Date: 2011-02 Impact factor: 2.419