Final answer:
Decreasing slice thickness would reduce the partial volume effect.
Step-by-step explanation:
The partial volume effect refers to the blurring or mixing of intensities of different tissues within a voxel in an imaging technique. It occurs when the size of the voxel is larger than the actual size of the structures being imaged. Reducing the partial volume effect is important for obtaining accurate images.
Out of the given options, decreased slice thickness would reduce the partial volume effect. When the slice thickness is decreased, the voxel size becomes smaller, allowing for better differentiation of the different tissues.
The other options, increased reconstruction FOV, increased mAsc, and decreased matrix, do not directly address the partial volume effect. They may have other effects on the image, but they do not specifically reduce the partial volume effect.