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Table 3 Preclinical PET motion effect measurements

From: Gating, enhanced gating, and beyond: information utilization strategies for motion management, applied to preclinical PET

  Units Measurements
Gated Gating+ Gating+ with phase shift Ungated
Number of frames (phase increment = 360°/number)     16 16 90 1
Kidney VOI, n = 102 Average kidney uptake Average VOI value, average of all gates Relative values 1.01 1.01 1.01 1.00
% SD Average uptake across gates Percentage 2.69 1.47 1.47  
Maximum displacement Average of all scans (SD of all scans) mm 1.50 (0.56) 1.10 (0.75) 1.10 (0.75)  
Liver profile, n = 34 Liver boundary displacement   mm 3.25 3.04 3.05  
Shoulder VOI, n = 84 % SD in VOI Average of all gates Relative values 1.53 1.05 1.05 1.00
Global COM, n = 84 Maximum COM displacement Average of all scans (SD of all scans) mm 0.71 (0.46) 0.43 (0.41) 0.43 (0.41)  
  1. Summary of VOI, line profile, and COM measurements in ungated, gated, and gating+ images across the population of preclinical PET scans. All numbers are average values of population or all appropriate population scans.