Radiologic Technologist Practice Exam

What type of radiation is primarily used in fluoroscopy?

1. Alpha radiation

2. Beta radiation

3. X-rays

4. Gamma radiation

The correct answer is: X-rays

Fluoroscopy primarily utilizes X-rays as its imaging modality. In this technique, a continuous X-ray beam is directed through the patient to produce real-time images of the internal structures and movements of organs in the body. The generated images are viewed on a monitor, allowing radiologists and other healthcare professionals to observe functional processes, such as swallowing, blood flow, and joint movement. X-rays are a form of electromagnetic radiation with higher energy than visible light, making them effective for penetrating soft tissues and producing clear images of bones and other dense structures. The use of X-rays in fluoroscopy is essential because they provide the necessary contrast between different tissues, enabling accurate diagnosis and assessment of various medical conditions. Other types of radiation, such as alpha radiation, beta radiation, and gamma radiation, are not suited for the fluoroscopic technique. Alpha radiation consists of heavy particles that cannot penetrate the skin, making them ineffective for imaging medical conditions. Beta radiation involves electrons and, while it can penetrate some materials, it is also not utilized in imaging techniques like fluoroscopy. Gamma radiation, like X-rays, is a form of electromagnetic radiation but it is typically used in different imaging modalities such as PET scans or gamma cameras for nuclear medicine, rather than in real-time imaging like