Fig. 2From: Sarcomatoid renal cell carcinoma: MRI features and their association with survivalDiagram showing method for calculating volume of T2 low signal intensity area (T2LIA). Regions of interest (ROIs) are placed on T2-weighted images on every single slice of the visible tumor where there is measurable T2LIA. These ROIs are multiple by slice thickness and added together to calculated the volume of T2LIA. ROI = region of interestBack to article page