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EJNMMI Physics
Fig. 11 | EJNMMI Physics

Fig. 11

From: Comprehensive SPECT/CT system characterization and calibration for 177Lu quantitative SPECT (QSPECT) with dead-time correction

Fig. 11

Artefacts on SPECT images of CTDI-32 (a and b) and Jaszczak (c and d) phantoms. Background activity is seen in areas of non-radioactive dense medium and the phenomenon is relatively more pronounced at very low activity (a and c). Streak (b) and non-uniformity (d) artefacts were see at very high count rates that were above the usable rage of the system. The images are normalized to the percentage of maximum voxel value indicated in each panel

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