Spatial resolution of the HRRT PET scanner using 3D-OSEM PSF reconstruction

THE spatial resolution of the Siemens High Resolution Research Tomograph (HRRT) dedicated brain PET scanner [1] installed at Copenhagen University Hospital (Rigshospitalet) was measured using a point-source phantom with high statistics. Further, it was demonstrated how the newly developed 3D-OSEM PSF reconstruction can improve the resolution in reconstructed images with high signal-to-noise-ratios [2], [3].