Influence of a point source motion in PET images and its compensation
نویسندگان
چکیده
Introduction Positron emission tomography (PET) allows to assess the relevant parameters of the applied dose distribution in ion beam therapy. It has been clinically implemented but only for the treatment of static targets. The planned application of hadron therapy to intra-fractional moving tumor sites demands an upgrade of the dose monitoring system in terms of regarding the shifted decay locations of the positron emitters due to the patient’s motion. Offline PET measurements of a moving point source have been performed at GSI Darmstadt in order to validate the motion influence in the PET images in the dependence of the motion amplitude. In addition the results of 4D reconstruction with motion compensation are discussed.
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