METHOD AND APPARATUS FOR MAGNETIC RESONANCE IMAGING WITH RADIO FREQUENCY PULSES GENERATED ACCORDING TO PHASE CRITERIA

摘要

In this disclosure, a process of imaging a target object using magnetic resonance (MR) includes an MRI scanner scanning the target object using a first transmit RF pulse. A processor associated with the MRI scanner can acquire magnitude and/or phase data associated with a first RF signal produced (or echoed) by the target object responsive to the MRI scan. The processor can determine a second transmit RF pulse for use to scan the target object based on the acquired data and according to a given phase criterion. The phase criterion can be configured to enforce mitigation of a phase distribution estimated based on the acquired data.

主权项

1. An apparatus for magnetic resonance imaging (MRI), comprising:
a magnet for applying a magnetic field to a target object; one or more radio frequency (RF) transceivers for transmitting and receiving RF signals; and a processor configured to:
cause a first MRI scan to be performed on the target object using a first transmit radio frequency (RF) pulse;acquire data associated with a first RF signal produced by the target object responsive to the first MRI scan;determine a second transmit RF pulse designed based on the acquired data and a phase criterion; andcause a second MRI scan to be performed on the target object using the second transmit RF pulse.