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- W2012289987 abstract "Limitations to the spatial resolution of current digital x-ray systems are bounded by the physical characteristics of the xraydetector. However, the need to image smaller structures provides motivation to develop high-resolution x-raydetector systems for use with computed radiographic, and tomographic x-ray systems. We report the implementation ofa tilted detector technique (TDT) to attain near isotropic resolution enhancement by combining two orthogonal imageviews, acquired with existing detector hardware tilted at a fixed angle.Images were acquired using a ceiling-mounted x-ray unit (Proteus XR/a, GE Medical Systems, 50kVp, 250mAs).Images were digitized using a Fujifilm Capsula X CR system, from a 35×43cm detector cassette placed on an angulatedstand, featuring a 3520×4280 image matrix with an in-plane pixel spacing of 0.1mm. Three images were acquired: twofor use with our TDT; and one for comparison, with no detector tilt. Performance was determined by using two line-pairphantoms (Models 07-521 and 07-533, Nuclear Associates) placed orthogonally to each other in the field of view.Custom software corrected for perspective distortion, co-registered and combined the tilted-detector images into a singlehigher-resolution image.Following unwarping and co-registration, the limiting spatial resolution of an image obtained via the weightedcombination of the two orthogonal views (8 lp/mm) is found to be superior to that of a single view acquired with nodetector tilt (5 lp/mm).This novel technique shows significant improvement in the spatial resolution of x-ray image acquisitions, using existingx-ray components and detector hardware." @default.
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- W2012289987 date "2012-02-23" @default.
- W2012289987 modified "2023-09-24" @default.
- W2012289987 title "Resolution enhancement of computed radiography images using two orthogonal tilts" @default.
- W2012289987 doi "https://doi.org/10.1117/12.913321" @default.
- W2012289987 hasPublicationYear "2012" @default.
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