Abstract: A method for designing an electromagnetic gradient coil for magnetic resonance imaging systems. The method includes the steps of: choosing a set of objectives Li, whereby the objectives Li are combined to one weighted-sum objective function; choosing a design variable ? for modifying the value of the objectives L; making an initial guess of the value of the design variable ?; simulating the magnetic field in a computational domain with respect to the distribution of the surface current density; carrying out a sensitivity analysis by calculating a sensitivity vector G=?L/??; updating the design variable ?, whereby the value of the design variable ? is changed in order to decrease the value of the objective L; determining whether convergency is achieved by either determining whether the value of the objective function does not decrease or the whether the Euclidian norm of the sensitivity vector G approximate to zero; and reconstruction of a discretized coil.

Abstract: The invention relates to a method for the fabrication of structures from an ion gel. In particular, the invention relates to a method, wherein the structures are fabricated by way of ink jet printing technology, which comprises the following steps of mixing at least one monomer with at least one ionic liquid to a printable liquid; generating the structure by printing the printable liquid using ink jet printing technique; and forming the polymer by means of polymerization, polyaddition or polycondensation of the structure; wherein common solvents are omitted.

Abstract: A method for designing an electromagnetic gradient coil for magnetic resonance imaging systems. The method includes the steps of: choosing a set of objectives Li, whereby the objectives Li are combined to one weighted-sum objective function; choosing a design variable ? for modifying the value of the objectives L; making an initial guess of the value of the design variable ?; simulating the magnetic field in a computational domain with respect to the distribution of the surface current density; carrying out a sensitivity analysis by calculating a sensitivity vector G=?L/??; updating the design variable ?, whereby the value of the design variable ? is changed in order to decrease the value of the objective L; determining whether convergency is achieved by either determining whether the value of the objective function does not decrease or the whether the Euclidian norm of the sensitivity vector G approximate to zero; and reconstruction of a discretized coil.