방사선사나라 Radiographer Nara

(영어/영문/English) The spin echo method (SE) is the most basic pulse sequence used to obtain MR images and is the most used method because of its excellent SNR and contrast. The spin echo method refers to obtaining an echo signal using 90º and 180º RF pulse waveforms. This dephases the spins of the X-Y component generated by the 90º RF pulse for a period of TE / 2, and then applies a 180º pulse. Th..