Rapid Time-Series Mapping of the Longitudinal Relaxation Time of the Brain During Neuronal Activity
Hsu J, Glover G
Lucas Center for Imaging, Stanford University School of Medicine
There have been reports on the change of the longitudinal relaxation time T1 related to the neuronal activity but these results are inferred from T1-weighted scans rather than direct T1 measurement. Recently, a rapid method of T1 mapping has been developed which is capable of obtaining T1 values at a time resolution feasible for brain fMRI. With this novel method, we have detected neuronal activation by direct mapping of the longitudinal relaxation time.