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Three-dimensional intraoperative stone localization

H Melchior, G Lang

    Urologia Internationalis
    |January 1, 1981
    PubMed
    Summary
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    This study introduces a 3D intraoperative stone localization technique using stereoscopic photography. It accurately determines stone position by calculating vertical location based on kidney diameter and X-ray projection distances.

    Area of Science:

    • Medical Imaging
    • Surgical Navigation
    • Urology

    Background:

    • Accurate intraoperative localization of kidney stones is crucial for effective surgical planning and treatment.
    • Existing methods may have limitations in precisely determining the three-dimensional position of stones during surgery.

    Purpose of the Study:

    • To present a novel technique for three-dimensional intraoperative stone localization.
    • To describe the geometrical principles and practical implementation of this new method.

    Main Methods:

    • The technique employs stereoscopic photography principles for stone localization.
    • Horizontal stone position is determined by the relation of stone images to X-ray markers.
    • Vertical stone position is calculated using kidney diameter and projection distances of double stone and marker images.

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    Main Results:

    • The described method allows for precise three-dimensional localization of intraoperative stones.
    • A new, compact X-ray unit with a collimator and tripod ensures optimal handling and consistent data.
    • The system facilitates easy focusing and reliable X-ray exposure during procedures.

    Conclusions:

    • This stereoscopic photography-based technique offers an effective solution for 3D intraoperative stone localization.
    • The developed X-ray system enhances usability and accuracy in surgical settings.
    • This advancement can improve surgical outcomes in stone removal procedures.