Patent · US Active

Apparatus and method for calibration of time origin of an RF pulse in MRI data acquisition systems

US10416267B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

CANON MEDICAL SYSTEMS CORPORATION · JP

Inventors

Andrew J. Wheaton · Shaker Heights, US
Michael R. Thompson · Carol Stream, US

Key dates

Filing date	Jan 9, 2017
Grant date	Sep 17, 2019
Priority date	—
Expiry date	Jul 16, 2037

Classification

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

Abstract

An apparatus and method are disclosed for determining a time origin of an input RF pulse of a plurality of input RF pulses. The method includes generating an RF echo based on the plurality of input RF pulses, a time-duration between the input RF pulses being controllable in order to determine a time instance corresponding to an ideal position of the RF echo. The method further includes acquiring a data signal corresponding to a scan of a subject, and computing a time-difference between a measured peak of the acquired data signal and the time instance corresponding to the ideal position of the RF echo, the computed time difference corresponding to a measure of a time-shift of an effective magnetic center of the input RF pulse.

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