pub fn t2star_from_r2star(r2star: &[f64]) -> Vec<f64>Expand description
Convert an R2* map (Hz) to a T2* map (seconds).
T2* = 1 / R2* for voxels where R2* > 0; zero otherwise. R2* = 0 (no measurable decay, or no fit) has no finite T2*; 0 marks it as “no value” rather than a cap such as 1 s, so a T2* map is never larger than the decay it can measure.