Radiology Practice Test

What role does the CR (Computed Radiography) system have in imaging?

1. It performs image analysis

2. It converts X-ray images into digital format

3. It increases radiation exposure

4. It facilitates surgical planning

The correct answer is: It converts X-ray images into digital format

The role of the Computed Radiography (CR) system in imaging primarily involves converting X-ray images into a digital format. This process is essential because it allows for the enhancement and manipulation of the captured images, making them easier to store, share, and analyze. When an X-ray is taken using CR, the image is initially captured on a specialized imaging plate that is sensitive to radiation. After exposure, this plate is processed using a reader that scans it, digitizing the information so it can be displayed on a computer screen. This transition from an analog image to a digital format allows for improved image quality, the ability to adjust brightness and contrast, and the use of advanced software for diagnostic purposes. Other options, such as performing image analysis or facilitating surgical planning, are functions that can benefit from CR but are not the primary role of the system itself. Additionally, while radiation exposure is an important aspect of all imaging modalities, CR is designed to optimize image capture with minimal exposure rather than increase it. Thus, the correct choice highlights the fundamental function of the CR system in the broader context of radiographic imaging.