Built-in sequences

Built-in sequences#

Each shipped sequence is presented with a representative prescription, resulting timing, sequence diagram, sampling geometry and acquisition order.

The prescription each application accepts, parameter by parameter, is on its reference page in the catalogue.

Family

Acquisition

Gradient echoes

One excitation, no refocusing pulse, spoiled between repetitions.

Spin echoes

One excitation and one refocusing pulse, acquired at the refocused echo.

Fast spin echo

One excitation and a CPMG train, one view per echo.

MPRAGE

An inversion, an inversion time, and a spoiled gradient-echo train over one partition.

Balanced SSFP

One excitation with every gradient axis balanced across the repetition.

Echo-planar imaging

One excitation and a train of readout lobes of alternating polarity.

Zero echo time

A hard pulse transmitted with the readout gradient already at amplitude.