Fig. 1From: Feasibility of evaluating the histologic and genetic subtypes of WHO grade II-IV gliomas by diffusion-weighted imagingImages showed an example of the placement of ROIs. Axial DWI (A), ADC (B), T2WI (C), and co-registered T2WI (D) from a patient with low grade glioma. Four non-overlapping round ROIs were placed within the solid part of the glioma on co-registered T2WI (ROI 1–4), while two same-sized ROIs (ROI 5–6) were placed within the contralateral white matter to calculate the value of the mean ADC in each ROI. DWI: diffusion-weighted imaging; ADC apparent diffusion coefficient; ROI region of interestBack to article page