Experimental Validation of an Assembly of Optimized Curved Rectangular Coils for the Use in Dynamic Field Free Line Magnetic Particle Imaging

In this work an experimental setup validating recently introduced optimization results for a dynamic field free line imaging device for the use in magnetic particle imaging is presented. In this setup, curved rectangular coils are used for magnetic field generation in dynamic field free line imaging for the first time. These coils promise an increase in magnetic field quality by a factor of five, as well as a simultaneous decrease in electrical power consumption by a factor of almost four compared to results achieved with commonly used circular coil. With this optimized setup, a complete dynamic field free line trajectory is realized. To do so, the MPI selection and drive field is simultaneously generated, measured and evaluated with respect to magnetic field quality and electrical power consumption. With the generated fields, it will be possible to take advantage of efficient Radon-based reconstruction algorithms, which arise for a line detection scheme and will considerably speed up reconstruction time. The presented results agree with simulations and do therefore support the implementation of a very efficient and precise dynamic field free line imager.