View source for 18811873. MRI APPARATUS (CANON MEDICAL SYSTEMS CORPORATION)

=MRI APPARATUS=


==Organization Name==

[[:Category:CANON MEDICAL SYSTEMS CORPORATION|CANON MEDICAL SYSTEMS CORPORATION]]


[[Category:CANON MEDICAL SYSTEMS CORPORATION]]

==Inventor(s)==

[[:Category:Masashi Ookawa of Nasushiobara (JP)|Masashi Ookawa of Nasushiobara (JP)]][[Category:Masashi Ookawa of Nasushiobara (JP)]]

==MRI APPARATUS==


This abstract first appeared for US patent application 18811873 titled 'MRI APPARATUS

==Original Abstract Submitted==

In one embodiment, an MRI apparatus includes processing circuitry configured to continuously generate time-point data in increments of a predetermined time length; generate a series of gradient magnetic fields based on a predetermined pulse sequence; acquire an external trigger in association with trigger-time-point data corresponding to an acquisition time point of the external trigger; estimate a value of an eddy magnetic field at a second time point by using the gradient magnetic fields and respective time differences between the first time-point data and the second time-point data, wherein the respective time differences change depending on when the external trigger is acquired; calculate a frequency or phase variation of an MR signal at the second time point; and correct a frequency or phase of an RF transmitting signal or the MR signal, by using the calculated frequency variation or the phase variation.



[[Category:G01R33/565]]
[[Category:A61B5/00]]
[[Category:A61B5/055]]
[[Category:G01R33/48]]
[[Category:CPC_G01R33/56518]]