American Registry of Radiologic Technologists (ARRT) Practice Exam

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Prepare for the American Registry of Radiologic Technologists Test with engaging quizzes and detailed explanations. Boost your test readiness with multiple-choice questions designed to enhance your knowledge and confidence.

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What is the effect of increasing matrix size on image resolution in CR?

Resolution decreases
Resolution is unaffected
Resolution increases
Resolution increases briefly

The correct answer is: Resolution increases

Increasing the matrix size in computed radiography (CR) enhances image resolution. A larger matrix consists of more pixels, allowing for finer detail to be recorded in the imagine. Each pixel can represent a smaller area of the anatomical structure being imaged, resulting in a higher level of detail and clarity in the final image. This increase in pixel number translates to improved spatial resolution, allowing for better visualization of structures, edges, and nuances in the anatomy. It's also important to note that while image resolution improves with a larger matrix size, it may also demand more data storage capacity and processing power. However, the fundamental principle that underlines this choice is that an increase in matrix size directly correlates with enhanced resolution, making the image more accurate and useful for diagnostic purposes.