Keywords: Fat & Fat/Water Separation, Fat and Fat/Water Separation, Bipolar gradients, phase errors, amplitude modulation
Motivation: The use of bipolar readout gradients enables shorter echo spacings which are beneficial for fat-water separation. However, these gradients also induced effects that are detrimental to accurate fat-water separation.
Goal(s): To develop a novel method for correcting bipolar-induced errors without additional scans and with flexibility in choosing the fat-water separation method.
Approach: Graph-cut fat-water separation was used for joint postprocessing of odd and even echoes to correct bipolar-induced effects. The corrected data was then processed as if acquired using unipolar readouts.
Results: This approach extends existing unipolar fat-water separation techniques for use with data acquired using bipolar readout gradients.
Impact: We proposed a novel approach that corrects phase errors and amplitude modulation induced by bipolar readout gradients. The approach enables broader use of advanced fat-water separation techniques with bipolar readout gradient pulses.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords