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google translatedata acquisition at 3t a number of refinements are expected to significantly improve the quality of fmri and dmri data relative to conventional 3 t scanners and data acquisition methods. these include improved pulse sequences and hardware. short-tr pulse sequences a major issue in acquiring whole-brain fmri and dmri at high spatial resolution is the acquisition times involved. for conventional pulse sequences, the repetition time (‘tr’, or time of full-volume coverage) equals the product of the number of volume slices and the acquisition period for each slice. this limits the temporal resolution desirable for fmri and requires unduly long scan durations for high angular resolution dmri. both problems are exacerbated when aiming for higher spatial resolution. techniques such as in-plane parallel imaging can reduce the image acquisition period for each slice, but only to a limited extent when a physiological contrast preparation period (e.g. for neuronal activity or water diffusion) precedes the spatial encoding period for each slice. recently, significant shortening of tr (i.e., acceleration of volume coverage) for both fmri and dmri has been achieved using “slice” multiplexing, in which multiple slices are excited and acquired simultaneously, thus sharing a common contrast and spatial encoding periods