In computed radiography, the window width primarily affects which image attribute?

In computed radiography, the window width primarily affects which image attribute?

• A. Brightness
• B. Gray scale (contrast)
• C. Exposure to the receptor
• D. Focus sharpness

Answer: (B)

Window width defines the range of grayscale values that are displayed, so it directly controls image contrast. A narrower window width compresses the range into fewer gray levels, making differences between tissues more pronounced (higher contrast). A wider window width broadens the range, producing more gray shades and lower contrast. Brightness is governed mainly by window level, while exposure to the receptor and focus sharpness are determined by how the image was acquired, not by the window width.

Window width defines the range of grayscale values that are displayed, so it directly controls image contrast. A narrower window width compresses the range into fewer gray levels, making differences between tissues more pronounced (higher contrast). A wider window width broadens the range, producing more gray shades and lower contrast. Brightness is governed mainly by window level, while exposure to the receptor and focus sharpness are determined by how the image was acquired, not by the window width.