Final answer:
Fluoroscopic television systems are closed-circuit television systems utilized in medical settings to provide real-time imaging to healthcare professionals. Technological advancements have shifted from older CRT to modern displays, with fiber optics playing a significant role in communication technologies.
Step-by-step explanation:
Fluoroscopic television systems are primarily used for medical imaging during various procedures and are considered a closed-circuit television system. This means that the images captured by the fluorescent screen and camera are displayed directly on a monitor for the medical staff to observe and are not broadcasted publicly. In contrast to open-ended or open circuit systems, closed-circuit systems are designed to be secure and private. This is crucial in a medical setting to maintain patient confidentiality and to provide real-time observation by healthcare professionals.
The technology behind these systems has evolved from older cathode ray tubes (CRT), similar to those once found in televisions and computer monitors, to more modern displays that may include fiber optics. Fiber optics is also widely used in various applications from endoscopes to communications infrastructure—including telephone, internet, and cable TV—due to distinctive properties such as low loss, high bandwidth, and reduced crosstalk. In medical fluoroscopic systems, however, the primary focus is on the immediate, closed-circuit transmission of imaging data