방사선사나라 Radiographer Nara

(영어/영문/English) 1. Slice selection gradient To select an image slice, an RF pulse having a frequency range corresponding to a desired slice thickness is applied while a gradient is applied. At this time, the applied gradient is called the slice selection gradient (Gs). Since the phase of the spins is scattered and the signal becomes small while the gradient is applied, after the RF pulse is appl..