A novel X-ray detector with multiple screen-CCD sensors for real-time diagnostic imaging. Physics of Medical Imaging

C.H. Slump, G.J. Laanstra, H. Kuipers, M.A. Boer, A.G.J. Nijmeijer, M.J. Bentum, R. Kemner, H.J. Meulenbrugge, R.M. Snoeren

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    12 Citations (Scopus)
    8 Downloads (Pure)

    Abstract

    In this contribution we propose an alternative x-ray detector based upon multiple screen-CCD sensor combinations. The impinging x-ray quanta are detected by a scintillator screen (e.g. CsI) and converted to light photons (typ. 1200 photons per absorbed x-ray quantum). We propose a number of lens-CCD sensors for standard video performance to detect the light photons coming out of an x-ray intensifying screen. Due to the smaller demagnification the coupling efficiency is better even with moderate quality (F number) lenses. We thus obtain a matrix of subimages, the system is constructed such that the subimages partially overlap. With digital image processing we construct from the subimages a single high quality image. Special hardware (incl. ASICS) has been developed for imaging at video rates, enabling (almost) fluoroscopy with this new detector. We show a viable digital x-ray imaging detector concept by means of our 2 by 2 CCD camera prototype and real-time processing engine. The image quality, MTF and noise properties are satisfactory and well in the diagnostic application range.
    Original languageEnglish
    Title of host publicationMedical Imaging 1996: Physics of Medical Imaging
    EditorsRichard L. Van Metter, Jacob Beutel
    PublisherSPIE
    Pages450-461
    Number of pages12
    ISBN (Print)0-8194-2083-2
    DOIs
    Publication statusPublished - 11 Feb 1996

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