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Stereometric Radiography

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  • Stereometric Radiography

    Dear Subscribers of BIOMCH-L,

    Having read the recent thread regarding marker placement in
    stereophotogrammetry systems, I was wondering if there has been any
    recent research in the area that I am working in.

    Let me introduce myself. I am a mechanical engineer working at a
    chiropractic college. One of the projects I'm currently pursuing is in
    developing a three-dimensional x-ray analysis technique of the spine for
    chiropractors to use in their practice. In practice, chiropractors will
    utilize a single x-ray machine to take views of the spine to do
    two-dimensional analysis. I am trying to use these same views to reconstruct
    three-dimensional point location and positional information of the
    vertebrae, over say six months of chiropractic care.

    The photogrammetry theory that I am using is the same as in
    other fields, but obviously surface markers can not be placed on the
    patient's vertebrae. So one resorts to trying to find anatomical
    landmarks that can be used as identification points on the vertebrae.
    The problem is in finding points which are sufficiently enough distinct to
    find in different views. This as you can imagine is very difficult. There are
    papers in the literature on this topic from the 70's and early 80's such as

    Suh, C.H., "The Fundamentals of Computer Aided X-Ray Analysis of the
    Spine," J. Biomechanics, 1974, Vol. 7, pp. 161-169.

    Brown, R.H., et. al., "Spinal Analysis Using A Three-Dimensional Radiographic
    Technique," J. Biomechanics, 1976, Vol. 9, pp. 355-365.

    Hindmarsh, J., et. al., "Analysis of Changes in the Scoliotic Spine Using
    a Three-Dimensional Radiographic Technique," J. Biomechanics, 1980, Vol. 13,
    pp. 279-290.

    but I haven't found anything recent (from the past 15 years or so).

    I was wondering if anyone is still doing research in this area, or in an area
    where a similar problem occurs, and how you are dealing with it.

    Cliff Smith
    Research Faculty

    Life College
    1269 Barclay Circle
    Marietta, GA 30060

    (770) 424-0554 x241