In order to maintain the same fluoroscopic screen brightness, patient dose can be reduced if:

The appropriate choice highlights that increasing the target-to-skin distance (TSD) can lead to a reduction in patient dose while maintaining the same fluoroscopic screen brightness. When the distance between the x-ray tube and the patient increases, the amount of radiation reaching the patient tissues diminishes due to the inverse square law; this law states that the intensity of radiation is inversely proportional to the square of the distance from the source.

By maintaining the fluoroscopic screen brightness through appropriate adjustments in the imaging system, the operator can still achieve high-quality images. Increasing the TSD not only helps minimize the radiation exposure to the patient but also allows for a balance in technique to ensure image fidelity.

This principle is vital in fluoroscopic procedures, as it emphasizes the importance of optimizing patient safety while ensuring that sufficient image quality is achieved during examinations.