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Figure 4 | EJNMMI Physics

Figure 4

From: Clinical evaluation of respiration-induced attenuation uncertainties in pulmonary 3D PET/CT

Figure 4

Scatter plots describing the relationships between SUV differences between EI-AC and EE-AC and some factors. Scatter plots describing the relationships between SUV differences between EI-AC and EE-AC and some factors, with first-order regression lines and 95% confidence intervals. The relationship between the average CT number and SUVmean in the lung VOIs (a) was the strongest (ρ = 0.83). We also found a relationship (ρ = 0.53) between the SUVmax in the tumour and the amplitude (b). This relationship was however mainly predictive for tumours with large amplitudes. The difference in SUVmax was also related to the difference in lung volume (ρ = −0.55) (c) and average CT number in the lungs (ρ = 0.50) (d).

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