Which matrix size is associated with the highest spatial resolution: 1024 x 1024 or 2048 x 2048 matrix?

Which matrix size is associated with the highest spatial resolution: 1024 x 1024 or 2048 x 2048 matrix?

• A. 1024 x 1024 matrix
• B. 2048 x 2048 matrix
• C. Both have same
• D. Neither influences

Answer: (C)

Spatial resolution is determined by how big each pixel is in the image. Pixel size comes from dividing the field of view by the number of samples along each direction (the matrix size). If you keep the field of view the same and go from a 1024 x 1024 matrix to a 2048 x 2048 matrix, you double the number of samples in both dimensions, so each pixel becomes half as large. Smaller pixels mean you can distinguish finer details, so the 2048 x 2048 matrix has higher spatial resolution than the 1024 x 1024 matrix. The two would have the same resolution only if you adjusted the field of view so that pixel size stayed the same, which isn’t specified here.

Spatial resolution is determined by how big each pixel is in the image. Pixel size comes from dividing the field of view by the number of samples along each direction (the matrix size). If you keep the field of view the same and go from a 1024 x 1024 matrix to a 2048 x 2048 matrix, you double the number of samples in both dimensions, so each pixel becomes half as large. Smaller pixels mean you can distinguish finer details, so the 2048 x 2048 matrix has higher spatial resolution than the 1024 x 1024 matrix. The two would have the same resolution only if you adjusted the field of view so that pixel size stayed the same, which isn’t specified here.