MRI apparatus and method using sample filtering based on time shifts caused by temporal variations in magnetic field strength
US7626387B2 · kind B2 · utility
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3References
9Claims
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Key dates
| Filing date | Mar 31, 2008 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Mar 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56572
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An MRI apparatus includes a filtering control unit that filters discrete MR-signal values. A filter-coefficient setting unit sets a plurality of filter coefficients with respect to each point of sampling time, based on time-shift amounts corresponding to variations in an MR-signal frequency arising from temporal variations in the magnetic field strength. A product-sum operating unit filters the MR-signal values by performing a product-sum operation between the filter coefficients and the MR-signal values. An image-data creating unit creates image data based on the MR-signal values on which the filtering processing is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.