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Table 1 Summary of patient preparation and image acquisition parameters

From: Comparison of machine learning and semi-quantification algorithms for (I123)FP-CIT classification: the beginning of the end for semi-quantification?

Parameter Local database PPMI database
Administered activity 167–185 MBq 111–185 MBq
Injection-to-scan delay 3–6 h 3.5–4.5 h
Acquisition time 30 min 30–45 min
Acquisition pixel size 3.68 mm Variable (scanner dependent)
Number of projections 60 per head (over 180o) 120 per head (over 360o)
Energy window 159 keV ± 10% 159 keV ± 10% and 122 keV ± 10%
Acquisition matrix size 128 × 128 128 × 128