Patent · US Active

Method and apparatus for phase calibration of an MRI pulse

US7492155B2 · kind B2 · utility

2Cited by
4References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 6, 2007
Grant dateFeb 17, 2009
Priority date—
Expiry dateAug 6, 2027

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R33/5659
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The present invention concerns a method and an apparatus for phase-calibrating an MRI pulse sequence which is used to calculate a linear phase and a constant phase to perform phase calibration on the scanned data, wherein a corresponding pre-scan without a phase encoding gradient is performed before a diagnostic scan. A reference echo is selected from the echoes obtained in the pre-scan. On the basis of the reference echo the constant phase is calculated to be used in performing the phase calibration in the scan. The constant phase that is obtained is correct and not affected by phase jumping. A further image reconstruction performed on the phase-calibrated data produces clear and artifact-free images.

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