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Abstract #4048

Sensitivity Enhancement at 7T Brain MR imaging Using Wireless Coupled-Split-Ring-Resonators Array

Akbar Alipour1, Gaurav Verma1, Michael Bush2, Judy Alper1, and Priti Balchandani1
1Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States, 2Siemens Medical Solutions USA, Inc, New York, NY, United States

Image quality in the brain periphery at ultra high field MRI is severely limited by low sensitivity. In this work we illustrate an efficient method for enhancing imaging sensitivity at 7T in a cadaver brain. The method is based on the application of a wireless coupled-split-ring-resonator array that amplifies the MR signal during acquisition, which can alleviate the low sensitivity problem in the brain periphery when low flip angle and low SAR sequences are needed. Initial ex-vivo 7T MR brain imaging results showed that 2-fold to 6-fold SNR gain was obtained using this array.

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