Low cost digital radiographic imaging systems: the x-ray light valve

J. A. Rowlands; Christie Ann Webster; Ivaylo Koprinarov; Peter Oakham; Kelly C. Schad; Timothy Szeto; Stephen Germann

doi:10.1117/12.650195

2 March 2006 Low cost digital radiographic imaging systems: the x-ray light valve

J. A. Rowlands, Christie Ann Webster, Ivaylo Koprinarov, Peter Oakham, Kelly C. Schad, Timothy Szeto, Stephen Germann

Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 614203 (2006) https://doi.org/10.1117/12.650195
Event: Medical Imaging, 2006, San Diego, California, United States

Abstract

In recent years, new x-ray radiographic systems based on large area flat panel technology have revolutionized our capability to produce digital x-ray radiographic images. However, these active matrix flat panel imagers (AMFPI) are extraordinarily expensive compared to the systems they are replacing. Thus there is a clear need for a low cost digital imaging system for general applications in radiology. Different approaches have been considered to make lower cost xray imaging devices for digital radiography, including: reducing the cost of existing flat panel systems, scanned projection x-ray, an approach based on computed radiography (CR) technology, and optically demagnified x-ray screen/camera systems. All of these approaches are quite expensive and none have the image quality of AMFPIs. We have identified a new approach - the X-ray Light Valve (XLV). It combines three well-established technologies: an a- Se layer to convert x-rays to image charge, a liquid crystal (LC) cell, and a scanned digital readout. This device achieves our goal of immediate readout with image quality comparable to an AMFPI, while keeping costs low. The XLV system has been shown to have all the properties required for general radiography.

Citation Download Citation

J. A. Rowlands, Christie Ann Webster, Ivaylo Koprinarov, Peter Oakham, Kelly C. Schad, Timothy Szeto, and Stephen Germann "Low cost digital radiographic imaging systems: the x-ray light valve", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 614203 (2 March 2006); https://doi.org/10.1117/12.650195

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