"Longitudinal magnetisation is the component of the net magnetisation vector parallel to the magnetic field (z-axis). This is due to a difference in the number of spins in parallel (low energy) and anti-parallel (high energy) state – i.e. before a radiofrequency pulse."
"Transverse magnetisation is the component of the net magnetisation vector perpendicular to the magnetic field (x-y plane). This is due to the spins of individual protons getting more or less into phase (coherence) – i.e. after a radiofrequency pulse."
"It is worth noting that it is only the net magnetisation vector that lies in the transverse plane, not the magnetic moments or the nuclei themselves. The magnetic moments of the nuclei only move in alignment with or against magnetic field strength (B0) – i.e. low or high energy state."
"Transverse vs longitudinal "
Expected headings
"Longitudinal magnetism"
"Transverse magnetisation"
"Transverse vs longitudinal "