EJNMMI Physics

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 180^o)	120 per head (over 360^o)
Energy window	159 keV ± 10%	159 keV ± 10% and 122 keV ± 10%
Acquisition matrix size	128 × 128	128 × 128

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