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Table 1 Overview of image acquisition characteristics

From: Preselection of robust radiomic features does not improve outcome modelling in non-small cell lung cancer based on clinical routine FDG-PET imaging

Robustness study Delineation (3 methods) Attenuation correction Motion
CT based MR based Average Gating
Number of patients 9 9 10
Scanner manufacturer GE Healthcare, Waukesha GE Healthcare, Waukesha GE Healthcare, Waukesha GE Healthcare, Waukesha
Scanner model Discovery 690 Discovery 690 SIGNA PET/MR SIGNA PET/MR SIGNA PET/MR
Reconstruction method VPFXS VPFXS VPFXS VPFXS VPFXS
Attenuation correction MR based: LAVA-flex pulse sequence CT based MR based: LAVA-Flex pulse sequence MR based: LAVA-Flex pulse sequence
Time delay between FDG injection and PET scan start (min) 71.5–92.5 71.5–92.5 40.3–117.6 57.1–75.9 36.8–82.0
Injected activity (MBq) 181.2–252.3 181.2–252.3 136.2–259.3
Acquisition type 3D 3D 3D 4D (phase-gated)
Time per bed position (min) 2 2 2 2 2
Resolution (mm) 2.73 × 2.73 × 3.27 2.73 × 2.73 × 3.27 2.34 × 2.34 × 2.78 2.34 × 2.34 × 2.78 2.34 × 2.34 × 2.78
Delineation Gradient-based threshold-based manual Gradient based Gradient based Gradient based Gradient based
Intraclass correlation coefficient (ICC) ICC(1,1) ICC(3,1) ICC(3,2)
  1. PET image dataset acquisition characteristics including reconstruction and delineation protocols for the three datasets are listed