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Chandra et al., 1990 - Google Patents

Analysis of random noise, coil inhomogeneity, and ghost artifacts in spin echo imaging on a 1.5 T commercial magnetic resonance imager

Chandra et al., 1990

Document ID
8511528094760255850
Author
Chandra R
Rusinek H
Publication year
Publication venue
Biomedical Image Processing

External Links

Snippet

Noise in spin echo (SE) images in MRI consists of random and structured components Structured noise arises mainly from the non-uniformity of the B1 field. We have studied these errors using a cylindrical phantom. Random noise analysis by subtraction of a 4, 9, or 25 …
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    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
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    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
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    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radiowaves involving electronic or nuclear magnetic resonance, e.g. magnetic resonance imaging

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