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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Magn Reson Med. 2014 Dec 2;74(6):1505–1514. doi: 10.1002/mrm.25514

Table 1.

Rate of chemical exchange (k, s−1) and cross-relaxation (σ, s−1) and 31P T1 relaxation times (s) in resting human calf muscle by band inversion at 7T (N = 10)

Band Inversion
2-pool Model 5-pool Model
kPi→γ-ATP 0.073 ± 0.011 0.071 ± 0.010
kPCr→γ-ATP - 0.138 ± 0.062
σγ↔β-ATP - 0.208 ± 0.047
σα↔β-ATP - 0.210 ± 0.051
T1 (Pi) 6.93 ± 1.90 6.55 ± 1.46
T1 (PCr) - 4.63 ± 0.35
T1 (γ-ATP) 4.07 ± 0.32 1.97 ± 0.14
T1 (α-ATP) - 1.34 ± 0.07
T1 (β-ATP) - 1.02 ± 0.05