Abstract #1332

A comparison of reference-based methods for removing artifacts in non-water-suppressed 1H MRSI data

Zhengchao Dong^1,2, Feng Liu^1,2, Min Li^2,3, Matthew Milak², and Sachin Jambawalikar⁴

¹New York State Psychiatric Institute, New York, NY, United States, ²Psychiatry, Columbia University, New York, NY, United States, ³Collage of Internet of Things, Hohai University, Changzhou, China, ⁴Radiology, Columbia University, New York, NY, United States

Sideband artifacts is the major obstacle to 1H MRSI without water suppression. To remove the sideband artefacts, several reference-based methods have been proposed, in which the reference signals are acquired from a water phantom with identical experimental parameters as those of in vivo scan are acquired. The reference-based methods do not suffer scan time penalty and they are compatible with any accelerated sequences such as SENSE-SI. The aim of the present work is to improve and compare the performance of two kinds of reference-based methods, namely, the phase compensation method and the artifact subtraction method.

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