Acquisition & Reconstruction Pulse Sequence Modules

Highlights: • Contrast-preparation pulse-sequence modules provide a flexible means to achieve a variety of useful contrast behaviors in MRI. • Inversion-recovery contrast preparation is useful for obtaining strong T1-weighted contrast or for suppressing the signal from one or more tissues based on their associated T1 relaxation times. • Driven-equilibrium contrast preparation can provide T2-weighted contrast, even for short-TR gradient-echo acquisitions, and is useful for imparting motion sensitivity for applications such as diffusion or vessel-wall imaging. • Presaturation contrast preparations are used to suppress the signal from a selected region, such as moving tissue that would otherwise result in motion artifacts, or from a selected chemical species, such as fat.