Structured Light 3D Tracking System for Measuring Motions in PET Brain Imaging |
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| Abstract | 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. |
| Type | Conference paper [With referee] |
| Conference | Proceedings of the SPIE - Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling |
| Year | 2010 Vol. 7625 pp. 76250X-1-11 |
| BibTeX data | [bibtex] |
| IMM Group(s) | Image Analysis & Computer Graphics |