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Table 5 A comparison of count-rate performance among different scanner models

From: Performance characteristics of the digital uMI550 PET/CT system according to the NEMA NU2-2018 standard

 

uMI550

Vision

Vereos

Discovery MI (20 cm AFOV)

NECR peak

124.4 kcps at 18.85 kBq/mL

306 kcps at 32.6 kBq/mL

153.4 kcps at 54.9 kBq/mL

193.4 kcps at 21.9 kBq/mL

Scatter fraction at NECR peak

36.65%

38.7%

33.9%

40.6%

Scatter fraction at low activity

35.35%

37%

31.7%

N/A

NECR at 5 kBq/mL

75.7 kcps

~ 120 kcps*

47.2 kcps

~ 100 kcps**

  1. *Reading from NECR curve in (12) Fig. 2
  2. **Reading from NECR curve in (11) Fig. 2a