A Model-based Reconstruction Technique for Fast Dynamic T1 Mapping
Johannes Tran-Gia 1 , Sotirios Bisdas 2 , Herbert Kstler 1 , and Uwe Klose 2
Institute of Radiology, University of
Wrzburg, Wrzburg, Germany,
of Diagnostic and Interventional Neuroradiology,
University Hospital Tbingen, Tbingen, Germany
A setup for dynamic parameter mapping with a temporal
resolution of up to 7.2s is presented. It uses the
previously presented IR-MAP technique to reconstruct
relaxation curves for successive inversions, each
followed by a radial Look-Locker FLASH acquisition and a
short waiting time for relaxation. After a correction of
T_1 errors caused by an insufficient relaxation between
successive inversions, this allows monitoring T_1
variations over time, which is desirable in many
applications such as dynamic contrast enhanced MRI.
After the functionality of the technique is validated on
a phantom and in vivo, the feasibility of the technique
in dynamic contrast-enhanced MRI is demonstrated in a
brain tumor patient.
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