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Preprocessing in computed tomography picture analysis: a "bone-deleting" algorithm.

G Henrich, N Mai, H Backmund

    Journal of Computer Assisted Tomography
    |June 1, 1979
    PubMed
    Summary
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    This study presents an automated method for removing extracranial bone from computed tomography (CT) images, essential for quantitative analysis. The algorithm accurately segments skull contours and can remove brain calcifications and artifacts.

    Area of Science:

    • Medical Imaging
    • Computer Vision
    • Image Processing

    Background:

    • Quantitative analysis of computed tomography (CT) images requires accurate segmentation.
    • Removal of extracranial bone is a critical preprocessing step for many CT-based analyses.
    • Existing methods may lack the precision needed for complex anatomical structures.

    Purpose of the Study:

    • To develop and present an automated procedure for deleting extracranial parts and bone from CT images.
    • To create an algorithm capable of delineating complex bone contours independently of external information.
    • To offer options for removing specific intra-cranial features like calcifications and artifacts.

    Main Methods:

    • An algorithm was developed for the automatic deletion of extracranial bone in CT images.

    Related Experiment Videos

  • The algorithm delineates complex bone contours using information solely within the skull.
  • Specialized options were included for removing calcified brain tissues and artifacts.

    • Main Results:

    • The procedure successfully automates the deletion of extracranial bone and soft tissues from CT scans.
    • The algorithm demonstrates independence from external information, focusing only on skull data.
    • Additional functionalities allow for the removal of brain calcifications and image artifacts.

    Conclusions:

    • The presented automated procedure is a prerequisite for various quantitative image analyses of the skull.
    • The algorithm offers a robust solution for segmenting and removing extracranial structures in CT imaging.
    • The system is implemented within the PICPRO software for CT image analysis and manipulation.