title: A modified saturation-recovery approximation for multiple spin-echo pulse sequences.
abstract: In equations describing multiple spin-echo pulse sequences, the T1 dependence is often approximated by a saturation-recovery expression, which is valid only when the repetition time TR is much greater than the time required for the echoes. A slight modification of this approximation greatly increases its accuracy for small TR values.
mesh_terms: D006801:Humans; D007089:Image Enhancement; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008433:Mathematics