The quality of a CT image can be improved by adjusting which two factors?

Improving the quality of a CT image is closely associated with adjusting both the window width and window level.

Window level determines the center of the range of Hounsfield units that will be displayed in the image. By adjusting the window level, you can focus on a specific tissue type's density, thereby enhancing the visibility of that particular area. This is particularly useful when you want to emphasize certain anatomical structures or contrast different types of tissues.

Window width controls the range of CT numbers that are displayed in the image. A narrower window width increases contrast by limiting the range of displayed densities, which can help highlight subtle differences between adjacent tissues. In contrast, a wider window width displays a broader range of densities and can provide more information, but it may reduce the contrast seen in tissues that are similar in density.

Together, these adjustments allow for tailored visualization of CT images, optimizing contrast and clarity for appropriate analysis and diagnosis.