Patent ID: 9063204
Filing Date: 2015-06-23
Classification: G01R

Abstract:
1. A method for improving tagging efficiency of an image captured during magnetic resonance imaging (MRI) of a subject by applying multiple radio frequency (RF) pulses, comprising: applying, using an MRI system, a radio frequency (RF) signal to the subject, causing the subject to enter a magnetic saturation state; applying, using the MRI system, a first Velocity Selective (VS) pulse module to the subject at a first time during a time period in which the subject magnetically relaxes from the magnetic saturation state toward a magnetic equilibrium state, wherein the first VS pulse module includes at least one gradient pulse and at least one RF pulse; applying, using the MRI system, a second VS pulse module to the subject at a second time that is a predetermined time interval after the first time, causing the subject to magnetically re-saturate, wherein the second VS pulse module includes at least one gradient pulse and at least one RF pulse; collecting, using the MRI system, imaging data at a third time after the application of the first VS pulse module and the second VS pulse module; iterating, multiple times, using the MRI system, operations of the applying the RF signal, the applying the first VS pulse module, the applying the second VS pulse module and the collecting the imaging data; and processing, using a data processing apparatus, the imaging data collected during the iterations to generate a magnetic resonance image of the subject.