2016_Imaging for Physicists
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RF pulse train
Echo & FID signals coincide
FID only
• Rapid successive RF pulses • Refocus residual transverse magnetisation into ‘Hahn’ echoes • Using or destroying these alters contrast
Made with FlippingBook
α
α
α
α
RF pulse train
Echo & FID signals coincide
FID only
• Rapid successive RF pulses • Refocus residual transverse magnetisation into ‘Hahn’ echoes • Using or destroying these alters contrast
Made with FlippingBook