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Abstract #2408

Through-Plane Chemical Shift Correction in Rf-Power Reduced Sequences at High Field Strength

Mathias Nittka1, Vladimir Jellus1, Lars Lauer1

1Siemens Healthcare, Erlangen, Germany

Application of low power, low bandwidth rf-pulses in slice selective sequences at high field strength may lead to severe through-plane chemical shift artifacts of fat signal. The presented methods uses a fat/water separating DIXON turbo spin echo sequence to generate through-plane chem. shift corrected images.

Keywords

acquisition addition additional allowed amplitude application applied applying approx artifact artifacts bandwidth become boundary carried challenging changing chem chemical combined combining comparable component concept consequently constant contain correct corrected correction corresponds deposition despite diagnostic dislocated distance double doubled duration example excitation excited experiment favorable field finally forward frequency furthermore generated generating illustration implemented increasing index intensive kept knee leads least like limited location makes matches matching measured mismatch note obvious often originate overlap particular patient peak perpendicular plus position positions power problem proof proposed pulse pulses radiology real recombined recombining reconstructed reconstruction reduce reduced reduction remaining requires robust routine scanned scanner scanning selective sensitive separated separation series setting severe shape shortening since slice slices software spatial spectral spin stack still straight strength strengths suppressed suppression terms turbo upper valuable verse volunteer water