Table 3.

Summary the results of the Mann–Whitney U-test for equal means of C11, as an example, between non-cancerous and cancerous tissues, of each patient, when different ROI sizes are used. H = 1 means the null hypothesis, i.e. equal means in both cases, is rejected, indicating a statistically significant difference in apparent properties between non-cancerous and cancerous tissues.

caseH valuep-value
Patient 1/ROI size: 0.67 mm13.1 × 10−31
Patient 1/ROI size: 1.34 mm18.6 × 10−18
Patient 1/ROI size: 2.68 mm11.3 × 10−4
Patient 2/ROI size: 0.67 mm19.3 × 10−30
Patient 2/ROI size: 1.34 mm12.3 × 10−14
Patient 2/ROI size: 2.68 mm16.3 × 10−4