Radiofrequency field enhancement with high dielectric constant (HDC) pads in a receive array coil at 3.0T

Qing X. Yang, Sebastian Rupprecht, Wei Luo, Christopher Sica, Zachary Herse, Jianli Wang, Zhipeng Cao, Jeffrey Vesek, Michael T. Lanagan, Giuseppe Carluccio, Yeun Chul Ryu, Christopher M. Collins

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Abstract

Purpose To investigate the use of a new high-dielectric constant (HDC) material for improving SNR and transmission efficiency for clinical MRI applications at 3 Tesla (T) with cervical spine imaging. Materials and Methods Human subjects were imaged using a commercial cervical spine receive array coil on a clinical system with and without pads containing Barium Titanate beads in deuterium water placed around the neck. Numerical electromagnetic field simulations of the same configuration were also performed. Results Experimental and simulated maps of transmit and receive fields showed greater efficiency for imaging the cervical spine when the pads were present. Experimental measurements showed a significant improvement in SNR with the pads present and an average input power reduction of 46%. Conclusion Use of HDC material can enhance SNR and transmission efficiency for clinical imaging of the cervical spine at 3.0T. © 2012 Wiley Periodicals, Inc.

Original languageEnglish (US)
Pages (from-to)435-440
Number of pages6
JournalJournal of Magnetic Resonance Imaging
Volume38
Issue number2
DOIs
StatePublished - Aug 1 2013

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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