Which of the following dimensions is primarily involved when discussing Spatial Gradient in magnetic resonance?

Spatial gradients in magnetic resonance refer to the variation of the magnetic field intensity over a specific distance. This is crucial for image formation, as it allows for the differentiation of signals from various spatial locations within the MRI scanner. When discussing spatial gradients, you are essentially considering how magnetic field strength changes across specific distances in the imaging region, which directly influences the resolution and quality of the MR images.

Distance is fundamentally involved in this context because it outlines the scale over which variations in the magnetic field strength occur. Greater spatial gradients correspond to more pronounced changes in field strength over shorter distances, which can affect the localization of signals and ultimately the resulting images. Thus, distance is the most relevant dimension when discussing spatial gradient in magnetic resonance.