Measurements Inside a Rabbit Sized FFL-MPI Device Using a Gradiometric Receive Coil

Jan Stelzner, Matthias Graeser, Anna Bakenecker, Anselm von Gladiss, Gael Bringout, Thorsten M. Buzug


This work continues prior investigations on the currently world’s largest field-free line (FFL) magnetic-particle- imaging (MPI) scanner. The bore of the imaging device provides a diameter of 180 mm and is designed to accomodate measurement objects up to rabbit size. It has already been shown that the drive-field coil is capable of conducting an alternating current with a frequency of 25 kHz and an amplitude of above 500 A. With this current input, the drive-field generator produces a magnetic flux density of more than 20 mT amplitude in the center of the bore. As the associated magnetic field strength is already sufficient to excite super-paramagnetic iron oxide nano particles (SPIONs), this work presents an approach to further increase the sensitivity of the system by testing a gradiometric receive-coil arrangement. 


MPI; FFL; Gradiometer; Measurement; Instrumentation; Sensitivity; MAPIT; rabbit-sized

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Copyright (c) 2017 Jan Stelzner

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