Table 1 Minimum and maximum values were considered for each of the models’ parameters. The estimated values are constrained to improve estimation stability.

From: Optimization of spin-lock times for T mapping of human knee cartilage with bi- and stretched-exponential models

Parameters

A(a.u.)

f

\({T}_{1{\rho }_{s}}\)[ms]

\({T}_{1{\rho }_{l}}\)[ms]

\({T}_{1\rho }*\)[ms]

β

Minimum

0

0.05

1

30

10

0.4

Maximum

1e10

0.95

10

90

90

1