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. 2023 Dec 12;68(24):245019. doi: 10.1088/1361-6560/ad0e37

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© 2023 The Author(s). Published on behalf of Institute of Physics and Engineering in Medicine by IOP Publishing Ltd

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Figure 7. — Motion data of one ¹¹C-LSN3172176 study (a) and one ¹⁸F-FPEB study (b). Top: UMT registration quality (RQ, dimensionless) data, bottom: COD and MCCOD (mm) with Vicra and the UMT data. Motion data are shown in the Y and Z directions for (a) and (b), respectively (motion was minimal in other directions). In the bottom panels, the curves were shifted vertically for clarity. Spikes in (b) relate to facial expressions. MCCOD is not shown for the first 5 min because of the rapid change in tracer distribution. COD: Centroid of Distribution. MCCOD: motion-corrected COD. UMT: United Imaging Healthcare Motion tracking system.