Figure 5.

Quantification of ADC in lung metastases. Axial T2 HASTE image (A), DWI (b800, B), and ADC map (C) showing a dominant 16-mm right lung metastasis. Pixel-by-pixel quantification of the ADC is performed by drawing a region of interest (ROI) around the lesion and determining the rate of decay of signal using a monoexponential fit of the data (ADEPT in-house software; ICR, UK). A minimum, maximum, and mean value of ADC can be derived for the ROI as well as a histogram plot of the ADC distribution in the lesion (D).