How does increasing window width affect the displayed image?

How does increasing window width affect the displayed image?

• A. Increased contrast
• B. Increased sharpness
• C. Decreased sharpness
• D. Decreased contrast

Answer: (D)

Window width determines how many gray shades are displayed on the image. Increasing the window width broadens the range of pixel values shown, so the differences between neighboring tissues are compressed and appear less distinct. In other words, more gray levels are included, but the overall contrast drops. If you were to narrow the window width, the display would use a smaller range of values and the differences between tissues would become more pronounced, increasing contrast. So increasing window width leads to decreased contrast, which is why this option is the correct description.

Window width determines how many gray shades are displayed on the image. Increasing the window width broadens the range of pixel values shown, so the differences between neighboring tissues are compressed and appear less distinct. In other words, more gray levels are included, but the overall contrast drops. If you were to narrow the window width, the display would use a smaller range of values and the differences between tissues would become more pronounced, increasing contrast. So increasing window width leads to decreased contrast, which is why this option is the correct description.