American Registry of Radiologic Technologists (ARRT) Practice Exam

Question: 1 / 400

As matrix size increases, what happens to pixel size?

It increases

It decreases

As the matrix size increases, the pixel size decreases. This relationship is based on how image resolution and detail are maintained in digital imaging systems, such as those used in radiography.

The matrix size refers to the number of pixels in both the horizontal and vertical directions of the digital image. When the matrix size is increased while the overall image dimensions remain constant, the individual pixels must occupy less space. Consequently, each pixel's size decreases. This reduction in pixel size allows for a greater number of pixels to represent the same area, leading to enhanced image resolution and finer detail in the displayed image.

Understanding this principle is vital for radiologic technologists as it directly impacts image quality. Smaller pixel sizes contribute to more precise imaging, which is crucial for accurate diagnosis and assessment in medical imaging.

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It remains the same

It becomes variable

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