Patent · US Active

Magnetic resonance imaging based on altering the shape of the inversion region in pulsed arterial spin labeling

US10502803B2 · kind B2 · utility

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3References
27Claims
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Key dates

Filing dateMay 16, 2016
Grant dateDec 10, 2019
Priority date—
Expiry dateJun 7, 2038

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R33/5602
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Techniques, systems and apparatus are described for magnetic resonance imaging by modifying the shape/thickness of an excitation/inversion slab. For instance, the inversion slab can be shaped as a wedge to improve temporal signal-to-noise ratio (tSNR) of arterial spin labeling (ASL) experiments by matching the temporal bolus width with the inter-pulse spacing in different feeding arteries. The shape/thickness of the excitation/inversion slab across the X-Y plane can be modified by modulating the movement of the “on-resonance” plane in space by the combination of conventional slice-selective (SS) adiabatic fast passage (AFP) and additional in-plane gradient pulses. Using this method, a computer can generate different shapes of the excitation/inversion slab.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.