Which configuration of fluoroscopic system minimizes radiation exposure to the patient and operator?

The under-the-table x-ray tube configuration is designed to minimize radiation exposure to both the patient and the operator. In this setup, the x-ray tube is positioned below the examination table, which allows for a more efficient shielding of radiation. The additional distance between the x-ray tube and the operator significantly reduces the radiation dose received during the procedure since the operator is generally positioned away from the primary beam. This configuration also allows for improved image quality due to reduced scatter radiation, as the table itself can absorb some of the scatter before it reaches the patient.

Furthermore, this arrangement facilitates a more direct pathway for the x-rays to the image receptor, requiring less output from the tube to achieve diagnostic images. This not only helps in minimizing the radiation dose but also aids in maintaining high-quality imaging standards.