What equation represents the relationship between precessional frequency and magnetic field strength?

The correct equation representing the relationship between precessional frequency and magnetic field strength is ω0 = B0 × y.

In this context, ω0 refers to the precessional frequency, B0 denotes the magnetic field strength, and y represents the gyromagnetic ratio, which is specific to the type of nuclei being imaged—in MRI, typically hydrogen nuclei. This equation indicates that the precessional frequency of the magnetic moments of nuclei is directly proportional to the magnetic field strength applied.

As the magnetic field strength increases, the precessional frequency also increases. This relationship is fundamental in MRI, as it explains how varying the magnetic field can achieve different resonance frequencies, allowing for the selection of specific frequency bands during imaging. Understanding this relationship is crucial for MRI technologists when they set imaging parameters and interpret the resulting images.