Among the listed recording systems, which one results in the lowest patient dose?

The choice of videotape/disc as the system that results in the lowest patient dose is correct due to the inherent technology and functioning of these recording methods.

Videotape and disc systems utilize electronic methods for capturing images, which have advanced significantly over the years. These systems typically rely on digital technology, allowing for various optimization techniques to minimize radiation exposure while still achieving high-quality images. Digital recording methods can be designed to enhance image quality without requiring higher doses of radiation, thereby helping to reduce the overall dose received by the patient.

In contrast, conventional spot film, cine radiography, and even photospot/digital systems often involve higher levels of radiation exposure due to their reliance on traditional film processing or less efficient digital techniques that may require additional doses to achieve the desired image quality. For instance, conventional spot films require specific x-ray exposures that are often higher than necessary due to the limitations of film sensitivity. Cine radiography, while providing motion images, typically necessitates a greater amount of exposure to achieve its results. Photospot systems, while better than conventional films, may still not match the radiation dose efficiency provided by modern videotape and disc technology.

Thus, the electronic and digital nature of videotape/disc systems enhances their efficiency in