Single-Exposure Conventional and Computed Radiography Image Acquisition

摘要

Chotas HG, Dobbins JT III, Floyd CE Jr, Ravin CE. Single-exposure conventional and computed radiography image acquisition. Invest Radiol 1991;26colon;438ndash;445.A technique for simultaneously acquiring a conventional film-screen radiographic image and a digital computed radiography (CR) image with a single x-ray exposure is described. Measurements of image contrast, spatial resolution, and signal-to-noise ratios demonstrate that a modified film cassette in which the first intensifier screen has been replaced with a CR imaging plate permits dual-image, single-exposure imaging with only nominal degradation in film and CR image quality relative to the two standard image counterparts. This technique may be used to acquire matched image pairs for research or as a way to provide full-size conventional film images in the clinical environment, while retaining the advantages offered by computed radiography systems.