Master's Thesis - Studierstube Augmented Reality Project - Graz ...

3.3 Signal localization
Figure 3.6: This is a complete pulse-sequence diagram of a FLASH gradient echo
sequence. After the slice selection gradient and the RF-pulse, an inversed slice-gradient
is turned on to rephase the slice. The phase-encoding gradient and the dephasing
read-out gradient are turned on simultaneously. Subsequently the read-out dephasing
gradient is compensated by the inverse read-out gradient. This provokes an echo which
gets sampled with a certain rate. To destroy cohesive magnetization before the sequence
is repeated, a gradient spoiling table is applied for the volume.
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