Table 1 Prepared and calculated values of pH, contrast agent concentrations (C), oxygen partial pressures (pO2) and phosphate buffer concentrations (Pi) and standard deviations (SD) for phantom samples presented in Fig. 5.

From: Development of multifunctional Overhauser-enhanced magnetic resonance imaging for concurrent in vivo mapping of tumor interstitial oxygenation, acidosis and inorganic phosphate concentration

phantom

vial

prepared

calculated mean values ± SD

pH

C, mM

pO2, mmHg

Pi, mM

pH

C, mM

pO2, mmHg

Pi, mM

1

1

6.77

1.2

0

0

6.76 ± 0.02

fixed

3 ± 4

none

2

7.12

1.2

15.2

0

7.10 ± 0.02

fixed

11 ± 7

none

3

7.33

1.2

38

0

7.35 ± 0.02

fixed

33 ± 8

none

4

7.51

1.2

76

0

7.47 ± 0.04

fixed

75 ± 10

none

2

1

7.0

2

15.2

0

6.97 ± 0.02

1.80 ± 0.16

12 ± 6

none

2

7.0

1

0

0

7.05 ± 0.02

1.1 ± 0.2

0 ± 2

none

3

7.0

0.4

15.2

0

7.03 ± 0.03

0.43 ± 0.06

16 ± 4

none

4

7.0

0.2

0

0

7.00 ± 0.03

0.20 ± 0.03

3 ± 2

none

3

1

6.8

1

76

0

6.83 ± 0.03

fixed

66 ± 8

0.1 ± 0.2

2

6.8

1

38

1

6.79 ± 0.02

fixed

29 ± 4

1.1 ± 0.5

3

6.8

1

15.2

2

6.74 ± 0.02

fixed

12 ± 5

2.0 ± 0.6

4

6.8

1

0

4

6.76 ± 0.02

fixed

0.3 ± 1.2

4.3 ± 0.4

  1. The designations: fixed, the parameter was fixed as prepared value for calculation procedures; none, the parameter was not calculated.