What is the primary function of the image intensifier in fluoroscopy?

The primary function of the image intensifier in fluoroscopy is to brighten the fluoroscopic image. This device plays a crucial role in the fluoroscopic system by converting the radiation that comes from the patient into a visible light image that can be observed in real-time.

When X-rays pass through the patient, they strike the input phosphor of the image intensifier, which converts these X-rays into visible light. This light is then amplified by the image intensifier, significantly increasing the brightness of the fluoroscopic image seen on the monitor. By enhancing the brightness, the image intensifier allows clinicians to observe structures and movements within the body with greater clarity and detail, even under low radiation levels, which is essential for patient safety and effective diagnosis.

Other functions related to image quality, such as magnification or reduction of exposure time, may be addressed through different components of the fluoroscopy system or through operational adjustments, but the key role of the image intensifier remains focused on increasing the brightness of the dynamic image displayed to the user.