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  Indian J Med Microbiol
 

Figure 2: Diagram of quantitative method for EBUS gray scale image. The first-order gray scale texture features are mean pixel value within ROI reflecting echo intensity, and the second-order gray scale texture features mainly reflect echo homogeneity within ROI. EBUS: Endobronchial ultrasound; ROI: Region of interest

Figure 2: Diagram of quantitative method for EBUS gray scale image. The  first-order gray scale texture features are mean pixel value within ROI reflecting echo intensity, and the second-order gray scale texture features mainly reflect echo homogeneity within ROI. EBUS: Endobronchial ultrasound; ROI: Region of interest