Tours

Tours#

Standalone examples that build on the Course. Each states its objective and the Course lessons it assumes.

Page

What it establishes

Multi-echo readouts

A multi-echo repetition, the echo spacing set by the receiver bandwidth and the gradient ramps, and the number of echoes that fit in the repetition time.

Segmented echo planar

Echo planar readout divided over several shots, and the exchange of scan time for geometric fidelity the shot count makes.

Spiral readout

Which of the amplitude, slew-rate and receiver limits determines the duration of a spiral arm, read off the waveform each design produces.

A ramp-sampled readout module

A readout module sampled through the ramps: the same k-space extent in a shorter lobe, at sampling locations that are not evenly spaced.

A twisting radial readout module

A twisting radial arm, stated as a k-space path and solved into a waveform under the gradient limits.