Which image matrix size provides the greatest spatial resolution?

The greatest spatial resolution in image processing is determined by the number of pixels in the image matrix. A larger matrix size means a higher pixel density, which allows for finer detail to be captured in the image. In the context of this question, the matrix size of 2048x2048 contains significantly more pixels than the other options. Specifically, it has over four times the number of pixels compared to a 1024x1024 matrix and considerably more than smaller matrices like 512x512 or 256x256.

Spatial resolution is crucial for medical imaging because it directly impacts the clarity of the images produced. A matrix of 2048x2048 can resolve smaller structures within the anatomy, leading to improved diagnostic capabilities and more accurate assessments. As a result, this choice is optimal for applications where high definition and detail are essential. The larger the matrix size, the better the spatial resolution and the more discernible the images will be.