Figure 3From: Digital image analysis of endoscopic ultrasonography is helpful in diagnosing gastric mesenchymal tumors An example of digital image analysis. From the standardized image, a region of interest (ROI) is selected by an experienced endosonographer for tumor analysis. The final results for the ROI are expressed in the bottom histogram. The mean (Tmean) and standard deviation (TSD) of the brightness values are 81.53 and 180.50, respectively.Back to article page