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European Radiology Experimental

Table 1 Stable radiomic parameters, independent from segmentation technique

From: Multiparametric quantitative and texture 18F-FDG PET/CT analysis for primary malignant tumour grade differentiation

 GLCM homogeneityEnergySphericity
Absolute values in different segmentation techniques
 SUVmax 2.5 threshold0.37 ± 0.090.08 (0.06–0.12)1.03 ± 0.05
 Liver pool fixed threshold0.38 ± 0.090.08 (0.06–0.12)1.03 ± 0.04
 41% SUVmax threshold0.37 ± 0.080.09 (0.07–0.13)1.04 ± 0.06
 ITK-SNAP segmentation0.37 ± 0.090.08 (0.06–0.13)1.04 ± 0.05
p values for hypothesis of significant difference
 2.5 versus liver0.5820.6320.844
 2.5 versus ITK-SNAP0.7880.9540.541
 2.5 versus 41%0.9680.3440.534
 Liver versus 41%0.5540.1220.633
 Liver versus ITK-SNAP0.4230.5960.653
 41% versus ITK-SNAP0.8190.3030.932
  1. Data are presented as mean ± standard deviation or median with interquartile range in parentheses
  2. GLCM Grey level co-occurrence matrix, SUV Standardised uptake value
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