During fluoroscopic exams, reducing the FOV results in?

Reducing the field of view (FOV) during fluoroscopic exams leads to increased patient exposure. This occurs because a smaller FOV concentrates the x-ray photons on a smaller area, requiring the fluoroscopy system to use higher radiation levels to maintain image quality. The x-ray tube compensates for the reduced area by increasing the dose delivered, which results in higher radiation exposure to the patient despite potentially improving image sharpness.

In contrast, less magnification generally occurs with a larger FOV rather than a smaller one, and while image brightness might improve with adjustments to the system, it is not a direct and guaranteed result of reducing the FOV. Additionally, reducing the FOV typically enhances contrast rather than reducing it, as the image becomes more focused and relevant to the area of interest. Thus, the knowledge of how FOV impacts the exposure levels is essential for proper radiation protection practices.