A CT image is a digitized analog grayscale image, and the CT image window technique includes window width and window position, with W on the CT slice representing the window width and C representing the window position. In the use of CT window technology, increasing the window width value increases the layers on the CT image, the tissue contrast decreases, and the slice image becomes blurred; decreasing the window width value decreases the layers on the CT image, the inter-tissue contrast increases, and the slice image becomes clear. Increasing the value of window level, the image on the CT display will become black, decreasing the value of window level, the image on the CT display will become white. There are certain density differences in the tissues and organs of the human body, and in image processing, you can choose the appropriate window width and window position according to the range of CT values, and by adjusting the values of the window width and window position, the images of the tissue structures and lesions on the CT images will be displayed more clearly.
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