Patent · US Active

Method for radio-frequency nuclear magnetic resonance imaging

US8159222B2 · kind B2 · utility

7Cited by
6References
22Claims
0Family size

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Inventors

Key dates

Filing dateMay 2, 2008
Grant dateApr 17, 2012
Priority date—
Expiry dateMay 22, 2029

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R33/4831
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Accumulated spin magnetization phase within a RF MRI procedure can be used for providing an orderly k-space traversal. By operating a transmit array adapted to produce two B1 fields in alternation, where the B1 fields are substantially uniform in amplitude over a sample volume of the MRI setup, and the B1 fields have respective spatial phase distributions such that selection of a difference in spatial derivatives of the spatial phase distributions permits control over a size of a step in k-space applied by successive refocusing pulses for generating the B1 fields in alternation. Each alternating refocusing pulse issued within a T2 time causes a step through k-space in an encoding direction determined by the difference in spatial derivatives.

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