Demonstration of a Multipulse Interferometer for Quantum Kicked-Rotor Studies

We implemented a multipulse interferometer scheme that allows us to study a quantum kicked rotor by observing dephasing of momentum coherence. Our study shows that momentum coherence can be nearly perfectly preserved under conditions where the mean energy as a function of the kick number is known to increase without bound. The accompanying width narrowing of these coherences may provide a new method for accurate measurement of the recoil frequency.Physic

Implementation of a Gradiometer Receive Coil for a Single-Sided FFL MPI Scanner

A single-sided MPI scanner holds a great promise for a variety of clinical applications. In such a scanner the SPIOs response to the excitation is detected by a planar receive coil on the surface of the device. Due to a single-sided geometry, differentiating a small signal on a strong excitation background becomes a challenging task and further impinges the potential sensitivity gain, thus we implemented a new planar gradiometer receive coil configuration for our MPI scanner. The preliminary results imply the improved sensitivity of the device over the traditional single coil design.   Int. J. Mag. Part. Imag. 6(2), Suppl. 1, 2020, Article ID: 2009038, DOI: 10.18416/IJMPI.2020.200903

Simulation Studies of Image Reconstruction for Field Free Line Single-Sided Magnetic Particle Imaging

Magnetic Particle Imaging (MPI) is an imaging modality that exploits the nonlinear response of superparamagnetic iron oxide nanoparticles (SPIONs) to a time-varying magnetic field. In the past years, various scanner topologies have been proposed. Among these, a single-sided scanner was presented in 2009. This scanner features all its hardware located on one side, offering accessibility without limitations due to the size of the object of interest. In this paper, the magnetic fields used in the scanner and 2-D image reconstruction over a field of view (FOV) of 2 cm is simulated. Hereby, the implemented algorithm is the filtered backprojection (FBP).   Int. J. Mag. Part. Imag. 6(2), Suppl. 1, 2020, Article ID: 2009073, DOI: 10.18416/IJMPI.2020.200907