If no R1 values has been loaded, but the R1_fit flag has been turned on, the R1 will be fitted as well.
For '''on-resonance''' models, f.ex [[M61]], (see See also [[Relax_disp.spin_lock_offset%2Bfield | relaxx disp.spin lock offset+field]] )), if <br>
<math>
\bar{\Omega}_{S,i} = 0.0
</math>
Therefore the fitted R1 values have no meaning for "No Rex" model.<br>
== Reference ==