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 happens to CR spatial frequency/resolution as matrix size increases?

It decreases
It remains the same
It increases
It fluctuates inconsistently

The correct answer is: It increases

As the matrix size increases in computed radiography (CR), the spatial frequency or resolution improves, which means it increases. A larger matrix size involves more pixels, allowing for a finer detail representation of the anatomical structures in the image. This results in higher spatial resolution because each pixel can represent smaller features. The relationship between matrix size and spatial resolution is significant for the quality of the images produced. A larger matrix size improves the ability to distinguish between closely spaced structures, contributing to better overall image quality and diagnostic utility. In practice, this can lead to better visualization of pathology and anatomical details that are crucial for accurate diagnosis and treatment planning.