pulse sequence

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What is a pulse sequence?

A pulse sequence is a preprogrammed sequence of instructions regarding the timing, strength, and duration of RF pulses and magnetic gradients that are to be applied by the MRI scanner to create specific types of MR images. For example, pulse sequences can be created so that images are acquired slice by slice (2D) or volumetrically (3D) or are acquired during certain portions of the respiratory or cardiac cycles if desired. Image slice orientation, thickness, and spatial resolution can be adjusted, tissues of interest (such as fat or water) can be suppressed, and image contrast (or weighting) can be altered to accentuate other tissues of interest.

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