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Table 3 Main characteristics of the cylindrical phantoms used in the study

From: Quantitative capabilities of four state-of-the-art SPECT-CT cameras

Name Height (mm) Diameter (mm) Initial activity (MBq) Counts in first projection (kcounts)
Contrast 300 200 740 ± 45 880
L 80 94 300 ± 18 670
M 80 54 300 ± 18 220
NEMA 190 200 740 ± 45 880
S 80 16 300 ± 18 20
XL 300 200 740 ± 45 880
  1. Contrast, cylindrical phantom with uniform cold and hot rods parts. L, cylindrical phantom of 8-cm height and 9.4-cm diameter; M, cylindrical phantom of 8-cm height and 5.4-cm diameter; NEMA, National Electrical Manufacturers Association NU2-1994 phantom; S, cylindrical phantom of 8-cm height and 1.6-cm diameter; XL, cylindrical phantom of 30-cm height and 20-cm diameter.