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. 2013 May;34(5):958–964. doi: 10.3174/ajnr.A3327

Table 2:

Quantitative image contrast measures

RSI-CM DWI-4000 ADC
TC (A/C) 5.78 (3.23) 1.71 (0.61) 0.91 (0.16)
EC (B/C) 1.50 (1.57) 1.17 (0.31) 1.19 (0.10)
RSEa (B/A) 0.24 (0.12) 0.73 (0.20) 1.33 (0.17)
Predicted infiltration baseline (%) 100* (C-B)/A for RSI-CM and DWI-4000b 100* (B-C)/A for ADC 0.01 (19.68) −7.57 (17.78) 18.69 (11.34)

Note:—A indicates mean intensity in tumor; B, mean intensity in edema; C, mean intensity in normal-appearing WM.

a

Values <1 indicate greater relative sensitivity to tumor versus edema, and values >1 indicate greater relative sensitivity to edema versus tumor.

b

Negative values may reflect tumor infiltrated edema.