Which of the following is NOT a component of a fluoroscopic unit?

A fluoroscopic unit typically consists of several key components designed to facilitate real-time imaging of moving structures within the body. These components include the image receptor, which captures the fluoroscopic images; recording systems that allow for the documentation and archiving of the fluoroscopic exams; and viewing systems where the images are displayed for the physician or radiologist to analyze.

The computed tomography scanner is not a part of a fluoroscopic unit. While both fluoroscopy and CT are imaging modalities used in radiology, they operate on different principles and serve different purposes. Fluoroscopy provides continuous imaging and is particularly useful for dynamic studies, while a CT scanner produces cross-sectional images using x-rays and is used for more static evaluations of anatomical structures. Therefore, the inclusion of a CT scanner in a fluoroscopy unit would be inappropriate, making it the correct choice for the component that is NOT part of a fluoroscopic unit.