MRI T1 Map

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MRI T1 Map

This tool supports the calculation of T1 maps from dynamic MR series acquired with two different pulse sequences. The Lower and Upper limits serve for restricting the calculated values to a physiological range.

Variable Saturation Data (FLASH)


The equation for the signal intensity using a FLASH sequence can be rearranged such that T1 may be calculated as the slope of a linear regression fit. See Buckley et al, equation (5.7).

Inversion Recovery Data


It is assumed that the first frame contains the equilibration magnetization M0. T1 is then estimated using a linear regressioin as described by McVeigh et al [2], using equation (2).


1.D.L. Buckley, and G.J.M. Parker, Measuring contrast agent concentration in T1-weighted dynamic contrast-enhanced MRI. in: A. Jackson, D.L. Buckley, and G.J.M. Parker, (Eds.), Dynamic Contrast-Enhanced Magnetic Resonance Imaging in Oncology, Springer, Berlin, 2005, pp. 69-79.

2.McVeigh E, Yang A, Zerhouni E. Rapid measurement of T1 with spatially selective pre-inversion pulses. Medical Physics. 1990;17(1):131-134.