Textural differences based on apparent diffusion coefficient maps for discriminating pT3 subclasses of rectal adenocarcinoma

Table 3 Comparison of apparent diffusion coefficient textural differences between pT3a and pT3b-c stages

ADC texture feature	pT3a (n = 30)	pT3b-c (n = 29)	P value	ICC
Energy (× 10-3)2	0.782 (0.527, 1.399)	0.640 (0.437, 0.779)	0.038	0.895
Entropy2	9.831 (8.969, 10.652)	10.805 (10.189, 11.592)	0.001	0.920
Inertia1	753.0 ± 417.0	878.9 ± 279.0	0.180	0.918
Correlation (× 10-3)2	0.538 (0.399, 1.255)	0.476 (0.414, 0.642)	0.332	0.921

¹Independent samples t-test, and data are the mean ± SD.

²Mann-Whitney U-test, and data are the median ± interquartile range.

ADC: Apparent diffusion coefficient; ICC: Intra-class correlation coefficient.