Structured light 3D tracking system for measuring motions in PET brain imaging

Oline Vinter Olesen, Morten Rudkjær Jørgensen, Rasmus Reinhold Paulsen, Liselotte Højgaard, Bjarne Roed, Rasmus Larsen

    Research output: Contribution to journalConference articleResearchpeer-review


    Patient motion during scanning deteriorates image quality, especially for high resolution PET scanners. A new proposal for a 3D head tracking system for motion correction in high resolution PET brain imaging is set up and demonstrated. A prototype tracking system based on structured light with a DLP projector and a CCD camera is set up on a model of the High Resolution Research Tomograph (HRRT). Methods to reconstruct 3D point clouds of simple surfaces based on phase-shifting interferometry (PSI) are demonstrated. The projector and camera are calibrated using a simple stereo vision procedure where the projector is treated as a camera. Additionally, the surface reconstructions are corrected for the non-linear projector output prior to image capture. The results are convincing and a first step toward a fully automated tracking system for measuring head motions in PET imaging
    Original languageEnglish
    JournalProceedings of SPIE, the International Society for Optical Engineering
    Pages (from-to)76250X
    Number of pages11
    Publication statusPublished - 2010
    Event2010 International Symposium on Medical Imaging - San Diego, CA, United States
    Duration: 13 Feb 201018 Feb 2010


    Conference2010 International Symposium on Medical Imaging
    CountryUnited States
    CitySan Diego, CA

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