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Table 4 SORa and SORw for the image quality phantom

From: dAcquisition setting optimization and quantitative imaging for 124I studies with the Inveon microPET-CT system

Isotope

Correction

SORa (%)

SORw (%)

  

2DFBP

2DOSEM

3DOSEM/MAP

2DFBP

2DOSEM

3DOSEM/MAP

18F

No correction

15.9

15.8

19.9

-0.8

4.4

0.1

 

AC

2.6

5.8

1.2

2.4

5.6

3.3

 

AC-SC

1.4

4.9

3.0

0.2

4.2

2.8

124I

No correction

17.3

18.1

17.9

4.8

9.7

3.6

 

AC

3.2

7.0

< 0.01

8.5

12.5

8.9

 

AC-SC

-0.9

4.5

< 0.01

3.7

7.4

3.6

 

AC-SC-GC

-6.6

2.2

< 0.01

-4.4

2.9

0.9

  1. SORa, spillover ratio for the air region; SORw, spillover ratio for the water region; 2DFBP, 2D filtered back-projection; 2DOSEM, 2D ordered-subset expectation maximization; 3DOSEM/MAP, 3DOSEM in combination with maximum a posteriori; AC, attenuation correction; SC, scatter correction; GC, gamma-coincidence correction.