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Abstract #1523

Extraction of NMR Signal from a Portable Single-Sided Magnet System in a Noisy Environment

W. Scott Hoge1,2, Mirko Hrovat3, Alan Hrovat3, Mikayel Dabaghyan3, Iga Muradyan1,2, James Butler1,2, and Samuel Patz1,2

1Radiology, Brigham and Women's Hospital, Boston, MA, United States, 2Harvard Medical School, Boston, MA, United States, 3Mirtech, Inc, Brockton, MA, United States

MR is a useful method for monitoring patients with pulmonary edema. To prevent difficult and costly transportation of patients to an MR imaging location, a portable magnet system was recently developed.The system necessarily operates in a noisy electro-magnetic environment,thus signal processing methods are needed to extract the NMR signal from a measurement system that is flooded with signal from external sources. This work compares a traditional adaptive filter theory approach against a sub-space projection approach. We demonstrate with phantom data measurements that these methods can improve detection of the NMR signal in anoisy environment.

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