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Table 4 MTV deviations from reference volume

From: The influence of different signal-to-background ratios on spatial resolution and F18-FDG-PET quantification using point spread function and time-of-flight reconstruction

 

ΔMTV (%) [tBC]

ΔMTV (%) [t40]

ΔMTV (%) [t50]

ΔMTV (%) [t60]

SBR1

    

 FBP

-0.5 (-5.7 to 3.3)

3.3 (2.3 to 5.5)*

-8.0 (-13.4 to -5.7)*

-20.0 (-29.5 to -13.3)*

 FBP + TOF

0.1 (-3.9 to 2.4)

4.1 (3.2 to 5.1)**

-7.1 (-11.6 to -4.4)*

-18.4 (-25.8 to -11.7)**

 3D-OSEM

-4.2 (-8.3 to -2.7)

-1.8 (-3.9 to -1.0)

-10.4 (-14.5 to -7.5)**

-20.3 (-28.0 to -13.7)**

 3D-OSEM + TOF

-2.6 (-5.4 to -1.3)

0.5 (-1.0 to 2.0)

-8.1 (-11.6 to -5.7)**

-17.6 (-24.4 to -11.8)**

 PSF

-9.4 (-15.2 to -5.5)*

-8.1 (-14.1 to -4.0)*

-15.8 (-22.5 to -9.7)*

-24.6 (-35.7 to -14.9)*

 PSF + TOF

-9.2 (-16.7 to -4.9)*

-7.3 (-14.1 to -3.7)

-15.2 (-24.7 to -9.2)*

-23.0 (-35.3 to -14.2)*

SBR2

    

 FBP

-3.2 (-5.7 to -2.2)*

9.7 (5.2 to 15.8)*

-5.0 (-6.8 to -3.8)**

-17.9 (-23.6 to -12.2)**

 FBP + TOF

-2.1 (-4.6 to -0.7)

10.6 (6.3 to 15.8)*

-3.7 (-5.0 to -2.6)**

-17.0 (-23.6 to -10.7)**

 3D-OSEM

-8.2 (-12.7 to -4.7)*

2.0 (-0.3 to 5.2)

-11.3 (-16.0 to -6.4)*

-21.7 (-28.0 to -13.9)**

 3D-OSEM + TOF

-5.9 (-10.9 to -3.3)*

4.9 (3.2 to 7.4)*

-8.3 (-12.7 to -4.5)*

-18.8 (-25.1 to -11.7)**

 PSF

-11.7 (-18.9 to -5.9)*

-2.1 (-4.6 to 0.0)

-14.5 (-21.1 to -7.4)*

-24.0 (-33.5 to -14.1)*

 PSF + TOF

-10.5 (-18.9 to -5.3)*

-1.4 (-4.3 to 0.6)

-13.1 (-21.1 to -7.2)*

-22.7 (-33.1 to -14.0)*

SBR3

    

 FBP

-17.5 (-26.2 to -13.2)**

Segmentation not applicable

12.4 (-1.0 to 24.2)

-15.4 (-21.5 to -11.2)**

 FBP + TOF

-14.5 (-22.5 to -11.5)*

14.8 (3.0 to 26.1)

-11.2 (-16.3 to -8.3)**

 3D-OSEM

-17.2 (-28.0 to -12.7)*

6.3 (1.7 to 9.1)*

-15.0 (-23.6 to -10.3)*

 3D-OSEM + TOF

-14.4 (-24.7 to -10.1)*

10.6 (4.0 to 14.7)*

-11.6 (-20.7 to -7.5)*

 PSF

-16.3 (-23.6 to -11.2)**

9.6 (2.5 to 17.7)

-13.1 (-17.4 to -9.4)**

 PSF + TOF

-16.3 (-26.2 to -11.3)*

5.3 (0.8 to 13.0)

-14.3 (-24.4 to -7.5)*

  1. Mean (range) relative deviations from the reference volume of all spheres are displayed for each segmentation method, SBR, and reconstruction method. t test: *P < 0.05; **P < 0.01; ***P < 0.001.