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4 edition of A flat panel detector for digital radiology using self-scanned readout of X-ray photoconductor found in the catalog.

A flat panel detector for digital radiology using self-scanned readout of X-ray photoconductor

Wei Zhao

A flat panel detector for digital radiology using self-scanned readout of X-ray photoconductor

fundamental study of feasibility.

by Wei Zhao

  • 28 Want to read
  • 39 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.Sc.)--University of Toronto, 1993.

SeriesCanadian theses = Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative.
ID Numbers
Open LibraryOL15113896M
ISBN 100315870729
OCLC/WorldCa221381536


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A flat panel detector for digital radiology using self-scanned readout of X-ray photoconductor by Wei Zhao Download PDF EPUB FB2

While the former produces images using an X-ray scintillator (X-ray conversion layer), followed by an amorphous silicon (a-Si) photodiode flat-panel layer, with a thin-film transistor (TFT) array for readout of the electrical charges by the photodiode array, the latter is based on the use of a photoconductor such as amorphous selenium (a-Se) to Author: Euclid Seeram.

The flat-panel x-ray image detector (sensor) concept is illustrated in Fig. where x-rays passing through the patient’s hand are incident on the sensor. The sensor converts the incident image to a digital image that can be sent to a computer and viewed on a by: W.

Zhao and J.A. Rowlands, "X-ray imaging using amorphous selenium: Feasibility of a flat panel self-scanned detector for digital radiology", Med. Phys, (). doi/ Conference Proceedings. We investigate a concept for making a large area, flat-panel detector for digital radiology.

It employs an x-ray sensitive photoconductor to convert incident x-radiation to a charge image which is. A flat-panel x-ray imaging detector using a layer of amorphous selenium (a-Se) for direct conversion of x rays (to charge) and an active matrix for self-scanned readout is being investigated for.

In the last ten to fifteen years there has been much research in using amorphous and polycrystalline semiconductors as x-ray photoconductors in various x-ray image sensor applications, most notably in flat panel x-ray imagers (FPXIs). We first outline the essential requirements for an ideal large area photoconductor for use in a FPXI, and discuss how some of the current amorphous and Cited by: Figure shows a typical X-ray image of a phantom hand obtained by a flat-panel X-ray image detector using an a-Se photoconductor as developed by Sterling Diagnostic Imaging (formerly DuPont).

The resolution is determined by the pixel size, which in present experimental image detectors is typically ∼ μm but is expected to be as small as.

KEYWORDS: Sensors, Electrodes, X-rays, Dielectrics, Coating, Medical imaging, X-ray imaging, Selenium, X-ray detectors, Electron transport Read Abstract + Direct detection of x-ray using the technology of selenium on Thin Film Transistor (TFT) has been used in a number of medical imaging and other products for almost 10 years.

SPIE Digital Library Proceedings. Sign In View Cart Help CONFERENCE PROCEEDINGS Papers Presentations Journals. Advanced Photonics Journal of Applied Remote Sensing Journal of Astronomical Telescopes, Instruments, and Systems Journal of Biomedical Optics.

Gur D, Fuhman CR, Feist JH, Slifko R, Peace B. Natural migration to a higher dose in CR imaging. In: Proceedings of the Eighth European Congress of Radiology, Vienna, Austria, September9. Zhao W, Rowlands JA. X-ray imaging using amorphous selenium: feasibility of a flat panel self-scanned detector for digital radiology.

An introduction to the Astro Edge solar array. NASA Technical Reports Server (NTRS) Spence, B. R.; Marks, G. The Astro Edge solar array is a new and innovative low concentrator power generating system which has been developed for applications requiring high specific power, high stiffness, low risk, light modular construction which utilizes conventional materials and technology.

Full text of "Advances in Electronics and Electron Physics Volume 52 " See other formats. The device has an integrated high-voltage power 27 ADVANCES IN ELECTRONICS AND ELECTRON PHYSICS VOL. 74 Copynght 0 Academic Press Limited All rights of reproducbon in any form reserved ISBN Ionizing radiation detectors for medical imaging Until recently, the film and film screen systems have had an unrivalled use despite its main limitations, i.e.

the limited dynamic range (narrow latitude) and the lack of digital processing.