Patent ID: 6677750
Filing Date: 2004-01-13
Classification: G01R

Abstract:
A method of magnetic resonance (NMR) for spatially resolved measurement of the distribution of NMR signals of metabolites (CSI) with low signal intensity, the method comprising the steps of:applying, to a spin ensemble for causing excited spins, a sequences of radio frequency (RF) pulses which are mutually offset at a temporal interval of a repetition time (TR); spatially encoding the excited spins by application and switching of magnetic gradient fields; selecting the repetition time (TR) between the exciting RE pulses to be at most a transverse relaxation time T2* of the excited spins; selecting the magnetic gradient fields in order to provide an action integral which produces zero over a temporal length between repetition times (TR) such that NMR signals are generated according to the principle of steady state free precession (=SSFP); and recording the NMR signals during a signal recording time TAQ.