Table 2 Statistical summary.

From: Understanding water properties in tumorous murine cells using field-cycling NMR relaxometry

Physical quantity

Model

Gradient

p-value

Adjusted

% change for

\(R^2\)

\(0\!\le \!c\!\le \! 100\)%

\(R_1^*\)

Coincident

−0.121

\(4.34\times 10^{-12}\)

0.7959

−41%

\(\tau _\ell\)

None suitable

\(-2.515\times 10^{-4}\)

\(4.67 \times 10^{-6}\)

0.0694

−32%

\(\tau _d\)

Coincident

\(-3.347 \times 10^{-4}\)

\(1.59\times 10^{-4}\)

0.3627

−24 %

\(\tau _b\)

Parallel

−0.238

\(1.33 \times 10^{-8}\)

0.7568

−57 %

x

Parallel

\(-3.076\times 10^{-5}\)

\(1.32\times 10^{-3}\)

0.7202

−23 %

\(N_\ell\)

None suitable

\(2.079\times 10^{-2}\)

0.471

0.3295

10 %

\(N_\sigma\)

None suitable

\(-1.899\times 10^{-3}\)

0.377

0.6471

−7 %

  1. \(R_1^*\) is the relaxation rate at the lowest frequency of 0.01 MHz. A p-value less than 0.05 signals a significant gradient. The adjusted coefficient of determination \(R^2\) indicates the proportion of the variability with the dataset that can be accounted for by tumour fraction. Where the model is listed as “none suitable”, the parallel model is used for the gradient. The final column provides the fractional change over the full range of tumour fraction.