In fluoroscopic testing, what method can be used to increase image brightness?

In fluoroscopic testing, utilizing an image amplifier or intensifier is the effective method for increasing image brightness. This device enhances the brightness of the image by amplifying the weak light levels produced during the x-ray exposure. The image intensifier converts x-rays into visible light, and by using a photoconductive material, it significantly increases the brightness of the image, enabling clearer visualization of the structures being examined.

This is particularly important in fluoroscopy since operators often need to see real-time images clearly while minimizing radiation exposure. The image intensifier not only improves the quality of the images displayed but also allows for lower doses of radiation because it makes the resulting images much brighter.

Other methods listed, such as increasing the radiation dose, can lead to unnecessary exposure and do not necessarily guarantee improved image quality. Employing a digital camera system may enhance image capture, but it primarily pertains to post-processing and does not address the real-time aspect of brightness during fluoroscopy. Using a larger film may affect the size of the image but does not inherently increase the brightness of the displayed image.