Ana-Maria
Oros-Peusquens1, Fabian Keil1, N Jon Shah1,2
1Institute of Neuroscience and Medicine
4, Medical Imaging Physics, Forschungszentrum Juelich GmbH, Juelich, Germany;
2Faculty of Medicine, RWTH Aachen University, Aachen, Germany
T1
mapping is performed with a spoiled 3D multiple-echo gradient echo sequence,
from two acquisitions with same TR and different flip angles. At each
different echo time, an independent T1 map is produced. Apart from small
variations due to decreasing SNR with echo time, no dependence of T1 on TE is
expected from the theoretical description of the method. However, a
systematic increase of T1 with echo time is observed in the white matter, and
interpreted as an indication for multi-component T1 decay due to the presence
of multiple and distinct water environments.