T1 Mapping for Breast DCE-MRI using Inversion Recovery TrueFISP: Assessment of Phantom & In Vivo Data

David Broadbent¹, Peter Wright¹, Daniel Wilson¹

Longitudinal relaxation time (T₁)) mapping was performed on a phantom and patients with primary breast tumours using a 3D inversion recovery steady state free precession sequence. A spin-echo sequence was also used with the phantom for comparison. T₁ maps were produced by fitting signal intensities to an appropriate model using a least squares curve fitting algorithm. Mean T₁ values in the phantom T₁ maps from steady state free precession data agreed closely with the spin-echo sequence results. T₁ values of fat, lesion and arterial blood measured in vivo agreed well with published values.