</math>
If no {{:R1 }} values has been loaded, but the <code>R1_fit </code> flag has been turned on, the {{:R1 }} will be fitted as well.
For data without a loaded offset, (see also [[Relax_disp.spin_lock_offset%2Bfield | relax disp.spin lock offset+field]] ), if <br>
<math>
\bar{\Omega}_{S,i} = 0.0
</math>
then the Rotating frame tilt angle θ is set to:
<math>
\theta = \frac{\pi}{2}
</math>
For '''on-resonance''' models, fand as such <br><math>cos^2\theta = cos^2\left( \frac{\pi}{2} \right) = 0.ex [[M61]], 0</math>
See [[Relax_dispTherefore the fitted {{:R1}} values have no meaning for "No Rex" model, if there is no offset.spin_lock_offset%2Bfield | relaxx disp.spin lock offset+field]]<br>
== Reference ==