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Table 3 Percentage errors between scatter corrected count and primary count

From: Simultaneous Tc-99m and I-123 dual-radionuclide imaging with a solid-state detector-based brain-SPECT system and energy-based scatter correction

RI of interest Tc-99m    I-123   
Acquisition (photopeak count ratio) None FiveEW-woDR FiveEW None FiveEW-woDR FiveEW
Single (%) 25.6 4.1 2.4 14.3 72.6 39.9
Dual (Tc:I = 1:9) (%) 700.4 27.0 35.5 14.3 72.6 39.9
Dual (Tc:I = 2:8) (%) 325.5 9.7 17.1 14.3 72.6 39.9
Dual (Tc:I = 3:7) (%) 200.5 4.0 11.0 14.3 72.6 40.0
Dual (Tc:I = 4:6) (%) 138.1 1.1 7.9 14.3 72.6 40.0
Dual (Tc:I = 5:5) (%) 100.6 0.6 6.1 14.3 72.6 40.0
Dual (Tc:I = 6:4) (%) 75.6 1.8 4.8 14.3 72.7 40.1
Dual (Tc:I = 7:3) (%) 57.7 2.6 4.0 14.3 72.7 40.2
Dual (Tc:I = 8:2) (%) 44.3 3.2 3.3 14.3 72.8 40.5
Dual (Tc:I = 9:1) (%) 33.9 3.7 2.8 14.3 73.1 41.2
Dual (mean ± SD) (%) 186.3 ± 213.8 6.0 ± 8.3 10.3 ± 10.5 14.3 ± 0 72.7 ± 0.2 40.2 ± 0.4
  1. Values are percentage errors between scatter corrected count and primary count
  2. SD standard deviation