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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