Skip to main content
. Author manuscript; available in PMC: 2015 Apr 10.
Published in final edited form as: IEEE Trans Med Imaging. 2014 Nov 21;34(4):994–1003. doi: 10.1109/TMI.2014.2373351

Fig. 4.

Fig. 4

From top to bottom: (1) MLEM reconstruction of list-mode PET data from a point source (1, 10, 100, 1000 Bq) moving at 0.5 mm/s in an S pattern (100 iterations). (2) Same data, processed using a single backprojection. (3) Source trajectory estimated directly from list-mode data using the minimum-distance method used in PEPT, which splits the events into independent frames. (4) Same data, reconstructed using a third-order B-spline. Spline parameters were optimized for each activity level.