What is the first step in performing a contrast detail test on fluoroscopy?

Placing the contrast detail phantom on the table is indeed the first step in performing a contrast detail test on fluoroscopy. This step is crucial because the test is designed to evaluate the system's ability to visualize variations in contrast, which is vital for diagnostic imaging. The phantom simulates anatomical structures and provides a controlled environment to assess the image quality produced by the fluoroscopy system.

Setting up the appropriate test environment by positioning the phantom allows for proper testing conditions. Only after the phantom is in place can the next steps be effectively carried out, such as checking calibration, adjusting settings, and positioning as needed for optimal imaging results. Proper placement of the phantom ensures that the test accurately reflects the performance of the fluoroscopy system under standard conditions.

Other steps, while also necessary for the overall testing process, do not precede the placement of the phantom. Checking the calibration and setting up patient positioning come after ensuring that the equipment is ready with the phantom in place, which ensures the assessment is based on consistent and reliable data.