Magnetic resonance experiments by spatial encoding using the rf transmission coil

Abstract

In a method of spatial encoding in magnetic resonance experiments, encoding kernels are imposed into the magnetization signal during the excitation or re-focussing process using a transmit array coil. Separate transmit array coil elements are provided so that in a particular phase encode direction, z in this case, they can be driven to produce partially orthogonal B1 fields, T(r), that exhibit a Fourier phase distribution given by()=.The NMR signal, S(k), received by a coil array element m of the M receive coils, during application of a pulse sequence for the n-th phase encoding step in k-space is then given by()=∫()()such thatρ'()=ρ()()=ρ()