T1 measurements at 7T with application to tissue specific imaging
Ikonomidou V, Duyn J, de Zwart J, van Gelderen P
National Institutes of Health
Tissue T1 properties are important for contrast and sensitivity in many MRI applications as well as MRI sequence design and optimization. T1 determination through exponential fitting of the inversion recovery curve is often hampered by ill-conditioning of the mathematical problem. In this work we present T1 measurements at 7 T obtained using logarithmic sampling, which improves the robustness of the fitting process. The resulting values were used for application of a tissue specific imaging sequence that allows selective tissue imaging based on differences in T1.