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Abstract #1018

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

David Broadbent1, Peter Wright1, Daniel Wilson1

1Medical Physics, Leeds Teaching Hospitals, Leeds, United Kingdom

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.