Do two consecutive 90º pulses produce a Spin Echo - Printable Version +- Unfortunately, the MRIQuestions.com forum became unmanageable due to spam attacks. I recommend an alternative resource: www.imagingQA.com (http://mriquestions.com/forum) +-- Forum: Pulse Sequences (Basic) (/forumdisplay.php?fid=5) +--- Forum: Spin Echo (/forumdisplay.php?fid=19) +--- Thread: Do two consecutive 90º pulses produce a Spin Echo (/showthread.php?tid=10538) |
Do two consecutive 90º pulses produce a Spin Echo - Mauede - 05-02-2017 01:12 AM Let's assume a first 90º pulse till the net M so as its Mxy components start precessing on the XY pane. If then another 90º pulse is applied then maybe the dephased spins will start rephrasing again but where will the net M be pointing ? Spontaneously I would think along the Z_axis antiparallel with respect to B0. If this is correct then I wonder whether a spin echo will be generated as a result of these two 90º successive pulses. Thank you in advance for your answer. Best regards |