What happens to image quality when the brightness level is decreased on a TV monitor?

When the brightness level is decreased on a TV monitor, the image quality generally decreases. This is because a lower brightness setting can lead to insufficient illumination of the image, causing darker areas to lose detail and potentially making it difficult to see subtle contrasts. Influencing factors such as the gamma settings and overall contrast can also play a role in how the brightness adjustment affects the visual output.

As brightness is reduced, dark regions may become indistinguishable from one another due to a lack of differentiation in their luminance. This can result in an image that appears flat or dull, undermining the clarity and detail that are essential in medical imaging contexts such as fluoroscopy. Brightness adjustments must be handled carefully to ensure that diagnostic images maintain the necessary quality for accurate interpretation.