Title:
MAGNETIC RESONANCE IMAGING METHOD CANCELING ARTIFACTS AND UNDESIRED SIGNALS
Document Type and Number:
WIPO Patent Application WO/2015/102169
Kind Code:
A1
Abstract:
A first off resonance radio frequency (RF) pulse and a second off resonance RF pulse having a phase difference of 180 degrees from the first off resonance RF pulse are applied, one or more auxiliary gradient magnetic fields for offsetting inhomogeneity of a main magnetic field generated by applying the first and second off resonance RF pulses are applied, and magnitudes and signs of the auxiliary gradient magnetic fields are appropriately adjusted. Therefore, artifacts generated due to inhomogeneity of a main magnetic field in an imaging method using an off resonance RF pulse may be removed. When this method is applied to an imaging method using a spatial pre-saturation RF pulse, the phenomenon in which spins excited by the pre-saturation RF pulse are excited again by the off resonance RF pulse to return signals, such that undesired signals overlap and appear in an ultimately-obtained signal, may be removed.
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Inventors:
CHUNG JUN YOUNG (KR)
PARK HYUN WOOK (KR)
PARK HYUN WOOK (KR)
Application Number:
PCT/KR2014/004765
Publication Date:
July 09, 2015
Filing Date:
May 28, 2014
Export Citation:
Assignee:
UNIV GACHON IND ACAD COOP FOUND (KR)
International Classes:
A61B5/055
Foreign References:
| CN103167829A | 2013-06-19 | |||
| US20100194388A1 | 2010-08-05 | |||
| US20060164082A1 | 2006-07-27 | |||
| JP2012522573A | 2012-09-27 | |||
| US20100303320A1 | 2010-12-02 |
Other References:
See also references of EP 3089663A4
None
None
Attorney, Agent or Firm:
SON, Min (6th Floor 163, YangJaeCheon-ro,,Gangnam-gu, Seoul 135-855, KR)
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