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. Author manuscript; available in PMC: 2021 Apr 1.
Published in final edited form as: J Magn Reson. 2020 Feb 27;313:106703. doi: 10.1016/j.jmr.2020.106703

Table 2:

Bloch simulation parameters for muscle Cr and PCr concentration calculations on 11.7 and 21.1 T scanners

Muscle 11.7 T scanner
ParameteR Water MT pool (A) Cr pool (B) PCr pool (C)
Δω (ppm) 0 0 1.9 2.6
R1 (s−1) 1/(2±0.7) 1 1 1
R2 (s−1) 1/(0.033±0.001) 1/15×10−6 1/(0.5±0.1) 1/(0.5±0.1)
Mol (mM)
pH 6.5
pH 6.8
pH 7.1		 - 11.7
14.2
9.6
10.8
41.5
30.7
19.5
kex (/sec)
pH 6.5
pH 6.8
pH 7.1		 - 21
143±15
292±50
585±150
55±3
78±6
158±15
Muscle 21. 1 T scanner
Parameter Water MT pool (A) Cr pool (B) PCr pool (C)
Δω (ppm) 0 0 1.9 2.6
R1 (s−1) 1/(2.33±0.06) 1 1 1
R2 (s−1) 1/(0.015±0.0004) 1/15×10−61 1/(0.3±0.1) 1/(0.3±0.1)
Mol (mM)
pH 6.5
pH 6.8
pH 7.1		 - 11.7
17.5
11
10.7
37.7
28
15.8
kex (/sec)
pH 6.5
pH 6.8
pH 7.1		 - 21
143±15
292±50
585±150
55±3
78±6
158±15
1

(R1, R2 values of MT, Cr, PCr without error estimates are similar to those found in reference 15)