FAST RHO-NQR IMAGING WITH SLICE SELECTION

A combination of a new pulse sequence allowing fast data acquisition i n the rotating frame version of NQR (rho-NQRI) together with a method for slice selection, is reported. The procedure allows us to record th e magnetization evolution during its motion in the rotating frame. At the same time a zero-crossing external magnetic field gradient is appl ied in order to select a determined slice of the object to be imaged. The experiments reported are the first steps toward a fast tridimensio nal rho-NQRI; even more, as the spectroscopic information is preserved during the spatial encoding procedure, it could be considered as a 3D spatially resolved NQR spectroscopy technique.