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Implementation and performance of an optical motion tracking system for high resolution brain PET imaging

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7 Author(s)
Lopresti, B.J. ; Dept. of Radiol., Pittsburgh Univ., PA, USA ; Russo, A. ; Jones, W.F. ; Fisher, T.
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Head motion during PET scanning is widely regarded as a source of image degradation and resolution loss. Recent improvements in the spatial resolution of state-of-the-art tomographs may be compromised by patient motion during scanning, as these high resolution data will be increasingly susceptible to smaller movements of the head. The authors have developed an opto-electronic motion tracking system based on commercially-available technology that is capable of very accurate real-time measurements of the position and orientation of the patient's head. These positions are transformed to the reference frame of the PET scanner, and could potentially be used to provide motion correction of list-mode emission data on an event-by-event basis.

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Nuclear Science, IEEE Transactions on  (Volume:46 ,  Issue: 6 )