STP716

    Cylindrical-Scanning Transaxial Roentgen Tomography of High Temporal Resolution

    Published: Jan 1980


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    Abstract

    A prototype multiple X-ray source computerized transaxial tomographic system called the Dynamic Spatial Reconstructor (DSR) is currently being fabricated. This system is to consist of 28 X-ray sources arranged in a semicircle with 28 corresponding image intensifier/image isocon imaging chains arranged along an opposing semicircle. This entire system will permit mathematical reconstruction imaging of a cylindrical three-dimensional volume 23 cm axially and 30-cm diameter transaxially. This entire volume can be scanned in various ways ranging from the high “temporal resolution” (10 ms repeated 60/s), spatial resolution [full width half maximum (FWHM) 6 mm axially and transaxially], and “density resolution” (10 percent of roentgen opacity of water) to longer scan durations (for example, 100 ms up to a maximum of 2 s) with associated increases in spatial or density resolution or both.

    It is anticipated that in addition to providing much needed information about optimal scanning configuration needs and requirements for different biomedical questions, the DSR is expected to be particularly useful in quantitation of the dynamic structure, function, and perfusion of the heart, lungs, and other organs.

    Keywords:

    radiography, tomography, X-ray, signal-to-noise ratio


    Author Information:

    Ritman, EL
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.

    Robb, RA
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.

    Harris, LD
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.

    Kinsey, JH
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.

    Gilbert, BK
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.

    Smith, KT
    Special project associate, Oregon State University, Corvallis, Ore.

    Wood, EH
    Biodynamics Research Unit, Mayo Medical School, Rochester, Minn.


    Paper ID: STP27513S

    Committee/Subcommittee: E07.01

    DOI: 10.1520/STP27513S


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