3D Surface Realignment Tracking for Medical Imaging: A Phantom Study with PET Motion Correction

Oline Vinter Olesen, Rasmus Reinhold Paulsen, Rasmus Ramsbøl Jensen, Sune H. Keller, Merence Sibomana, Liselotte Højgaard, Bjarne Roed, Rasmus Larsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    We present a complete system for motion correction in high resolution brain positron emission tomography (PET) imaging. It is based on a compact structured light scanner mounted above the patient tunnel of the Siemens High Resolution Research Tomograph PET brain scanner. The structured light system is equipped with a near infrared diode and uses phase-shift interferometry to compute 3D representations of the forehead of the patient. These 3D point clouds are progressively aligned to a reference surface and thereby giving the head pose changes. The estimated pose changes are used to reposition a sequence of recon- structed PET frames. To align the structured light system with the PET coordinate system a novel registration algorithm based on the PET trans- mission scan and an initial surface has been developed. The performance of the complete setup has been evaluated using a custom made phantom based on a plastic mannequin head equipped with two positron emitting line sources. Two experiments were performed. The rst simulates rapid and short head movements, while the second simulates slow and contin- uous movements. In both cases, the system was able to produce PET scans with focus the PET reconstructions. The system is near ready for clinical testing.
    Original languageEnglish
    Title of host publicationProceedings of the MICCAI workshop on Mesh Processing in Medical Image Analysis (MeshMed)
    Publication date2011
    Publication statusPublished - 2011
    EventMICCAI workshop on Mesh Processing in Medical Image Analysis - Toronto, Canada
    Duration: 18 Sep 2011 → …

    Workshop

    WorkshopMICCAI workshop on Mesh Processing in Medical Image Analysis
    CountryCanada
    CityToronto
    Period18/09/2011 → …

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