Investigation of Low-Cost Op-Amps as Decoupling Preamplifiers for MRI Array Coils. Conference Paper uri icon

abstract

  • The benefits of array coils in MRI and MRS are well known. A key component of essentially all array coils used today is the decoupling preamplifier. Unlike conventional 50 ohm low-noise preamps, decoupling preamps present a reactive impedance to the coil, which can be used to 'block' currents from being induced in the receive coil, reducing the impact of any electromagnetic coupling between array elements. While available from a number of vendors, a lower-cost solution would be advantageous. We investigate the use of conventional operational amplifiers as low-noise decoupling preamplifiers. In this paper the performance of the op-amp preamplifier is compared to conventional 50 . The op-amp preamp design shows promise for use as a decoupling preamplifier with array coils.Clinical Relevance- This work could facilitate the development of array coils for spectroscopy and imaging.

name of conference

  • 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

published proceedings

  • Annu Int Conf IEEE Eng Med Biol Soc

author list (cited authors)

  • Sun, C., Bauer, C., Busher, J., McDougall, M. P., & Wright, S. M.

citation count

  • 1

complete list of authors

  • Sun, Chenhao||Bauer, Courtney||Busher, Joseph||McDougall, Mary P||Wright, Steven M

publication date

  • July 2020