Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1996-12-31
1999-08-24
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324307, G01V 300
Patent
active
059428970
ABSTRACT:
An RF pulse is applied to an object lying in an imaging region to which a static field is also applied. By applying a read-out gradient field to the object, gradient echoes are generated so that image reconstruction echo data are acquired. In addition to the image reconstruction echo data, two kinds of correction echo data are acquired at the same echo time but with the opposite read-out gradient field. These correction echo data have the same phase error component due to the inhomogeneity of the static field since the echo time is the same. These correction echo data have the opposite phase error component due to the eddy magnetic field in polarity. Therefore, a phase error caused by the eddy magnetic field can be corrected on the basis of these correction data.
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Arana Louis
Kabushiki Kaisha Toshiba
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