A CT image is generally stored in a computer using what matrix sizes?

The correct answer reflects commonly used matrix sizes in computed tomography (CT) imaging. Matrix size is a fundamental aspect of CT images, as it defines the resolution and detail of the image produced. The sizes 256x256 and 512x512 pixel matrices are widely utilized because they offer a balanced resolution suitable for a variety of clinical applications while ensuring efficient use of computational and storage resources.

A matrix size of 256x256 is often employed in routine scans, providing adequate detail for diagnostic purposes while maintaining a manageable file size. As technology has progressed, the 512x512 matrix size has also become standard in many CT systems, allowing for higher resolution imaging which is critical for detecting subtle abnormalities.

While larger matrix sizes exist, such as 1024x1024 and 2048x2048, these are typically utilized for high-resolution imaging purposes or specialized applications where even finer detail is critically necessary. However, they require more processing power and storage.

The options representing smaller matrix sizes, such as 128x128, are generally outdated for modern CT imaging practices due to insufficient resolution for effective diagnosis in most clinical situations. Hence, matrix sizes of 256x256 and 512x512 are pragmatically favored in clinical settings for their balance