Feature

selection methods given in rows Misclassificatio

Feature

selection methods given in rows. Misclassification percentage (mis%) given for raw data analysis (RDA), principal component analysis (PCA), linear discriminant analysis (LDA) and non-linear discriminant analysis (NDA) in columns. “”Combination E1, E2, E3″” in feature selection methods refers to features, which have proved to give best discrimination in all imaging timepoints analyses with Fisher and POE+ACC methods, combination of two imaging timepoints refers respectively to features from the analyses Temsirolimus in question. Table 3 MaZda classification results – results in groups of T2-weighted images. T2-weighted images classification RDA PCA LDA NDA Examinations Feature Selleckchem mTOR inhibitor selection method mis% mis% mis% mis% E1, E2, E3 Combination E1, E2, E3 34% 35% 47% 30% E1, E2 Combination E1, E2, E3 29% 29% 39% 19%   Combination E1, E2 37% 35% 40% 35% E1, E3 Combination E1, E2, E3 15% 14% 19% 4%   Combination E1, E3 16% 17% 21% 4% E2, E3 Combination E1, E2, E3 25% 24% 25% 14%   Combination E2, E3 24% 23% 30% 12% Imaging timepoint (E1, E2, E3) combinations for classification analyses. Feature selection methods given in rows. Misclassification percentage

(mis%) given for raw data analysis (RDA), principal component analysis (PCA), linear discriminant analysis (LDA) and non-linear discriminant analysis (NDA) in columns. “”Combination E1, E2, E3″” in feature selection methods

refers to features, which have proved to give best discrimination in all imaging timepoints analyses with Fisher and POE+ACC methods, combination of two imaging timepoints refers respectively to features from the analyses in question. Texture data: Statistical analyses The values of 73 features obtained with MaZda feature selection methods were tested with Wilcoxon paired test for groups obtained from imaging timepoints a) E1 and E2, b) E2 and E3, c) E1 and E3. T1- and T2-weighted fat saturation image series data were set as their own groups and further into two subgroups according to slice thickness: 5–7 mm and 8–12 mm. R&R test parameter repeatability Exoribonuclease was used to describe the variation in texture features between image slices within imaging sequence, and parameter reproducibility to describe the variation between examination stages. This test was performed separately for T1- and T2-weighted images in all three combinations of two imaging points. Differences in slice Epacadostat purchase thickness were not taken into account. Reproducibility values were expected to be quite large because the aim was that the treatment given between imaging stages would take effect and be shown in image texture.

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