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Abstract #1422

Composite Localization with Adiabatic Slice Selective Excitation & Refocusing (CLASER) for Improved 1H MRSI in Non Uniform B1 Fields

Catalina Sofia Arteaga De Castro1,2, Uulke A. van Der Heide1, Marco van Vulpen1, Peter R. Luijten2, Dennis W. J. Klomp2

1Radiotherapy, UMC Utrecht, Utrecht, Netherlands; 2Radiology, UMC Utrecht, Utrecht, Netherlands

Due to strong B1 field non uniformities at higher fields, measurements like MR spectroscopy can be difficult to obtain with a good localization. We have included a composite slice selective adiabatic excitation in a sLASER sequence (cLASER) to reduce SAR deposition and the TE while preserving total adiabaticity of the sequence. In-vivo results are shown in the human prostate to illustrate the cLASER performance.