Physics-based 3D head model reconstruction from cephalograms for medical application

Yoshimitsu Aoki, Masahiko Terajima, Akihiko Nakashima, Shuji Hashimoto

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Engineering techniques are being vigorously utilized in the medical sector. Examples are the visualization of human body measurements such as CT and MRI by computer graphics, and the prediction of the results of surgery by computer simulation. This paper discusses a system in which a cephalogram is constructed on the basis of anatomical knowledge, and the change in the 3D facial shape after facial surgery, especially corrective surgery on the jaw, is predicted. The proposed model has a layered structure composed of skeleton, muscle, and skin, and can use physical calculations to generate dynamically the modification of the facial surface accompanying the motion of muscle and skeleton. Using this cephalogram as the standard model, the facial surface and the skeleton shape are modified on the basis of 3D coordinate data on the measurement points obtained from two x-ray normalized images taken from the front and the side, and the head model for the individual is constructed. The change in shape of the facial surface when bone is moved following the actual surgical procedure is predicted in 3D. In the prediction experiment, a head model was constructed from the x-ray normalization images of the patient before surgery, and the surgical procedure was simulated. The prediction result was compared with the actual results and evaluated, and demonstrated the effectiveness of the proposed method.

    Original languageEnglish
    Pages (from-to)45-55
    Number of pages11
    JournalElectronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)
    Volume85
    Issue number11
    DOIs
    Publication statusPublished - 2002

    Fingerprint

    Medical applications
    Surgery
    Physics
    Muscle
    X rays
    Computer graphics
    Magnetic resonance imaging
    Skin
    Bone
    Visualization
    Computer simulation
    Experiments

    Keywords

    • Computer graphics
    • Jaw surgery
    • Physical facial model
    • Surgery simulation
    • X-ray normalization image

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Physics-based 3D head model reconstruction from cephalograms for medical application. / Aoki, Yoshimitsu; Terajima, Masahiko; Nakashima, Akihiko; Hashimoto, Shuji.

    In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi), Vol. 85, No. 11, 2002, p. 45-55.

    Research output: Contribution to journalArticle

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