What is typically increased as the magnification mode is selected in fluoroscopy?

When magnification mode is selected in fluoroscopy, the patient dose typically increases. This increase in dose occurs because magnification mode enhances the image resolution by using a smaller portion of the image intensifier's input screen. To maintain image quality, the system compensates by increasing the output of the x-ray tube, which ultimately results in a higher radiation dose delivered to the patient.

In contrast, patient comfort, image brightness, and equipment size do not inherently increase when magnification mode is activated. Patient comfort would be influenced more by procedural factors rather than the settings of the imaging equipment. Image brightness can actually decrease when magnification is applied because the system is using fewer x-rays for a smaller area, which may require adjustments to maintain optimal brightness. Finally, equipment size is constant and does not change with the adjustment of the imaging mode. Thus, the increase in patient dose is a significant consideration in the practice of fluoroscopy when using magnification mode.