Computational study of the optimum gradient magnetic field for the navigation of spherical particles into targeted areas
Ημερομηνία
2015Γλώσσα
en
Λέξη-κλειδί
Επιτομή
Spherical magnetic nanoparticles coated with drugs are navigated to targeted areas, for the treatment of cancer. The particles are navigated by magnetic field gradients that can be produced by an MRI device. In the present work, a computational study for the estimation of the time evolution of the gradient magnetic field is presented in order to ensure the optimum driving of the particles into the targeted area. For this purpose, the present method takes under consideration all the forces acting on the particles that make them move. The method is based on an iteration algorithm that intents to minimize the deviation of the particles from a desired trajectory. In this way, the gradient magnetic field is temporarily adjusted in a suitable way so that the particles' distances from the trajectory are decreased. Using the above mentioned method, it is clear that with the increase of the optimization parameters, i.e the modification of the gradient magnetic field, the particles are moved closer to the desired trajectory. Moreover, it is found that the present numerical model can navigate particles into the desired trajectory with efficiency above 90%.
Collections
Related items
Showing items related by title, author, creator and subject.
-
A numerical model for aggregations formation and magnetic driving of spherical particles based on OpenFOAM®
Karvelas E.G., Lampropoulos N.K., Sarris I.E. (2017)Background and objective This work presents a numerical model for the formation of particle aggregations under the influence of a permanent constant magnetic field and their driving process under a gradient magnetic field, ... -
On the magnetic aggregation of Fe3O4 nanoparticles
Karvelas E.G., Lampropoulos N.K., Benos L.T., Karakasidis T., Sarris I.E. (2021)Background and objective In-vivo MRI-guided drug delivery concept is a personalized technique towards cancer treatment. A major bottleneck of this method, is the weak magnetic response of nanoparticles. A crucial improvement ... -
Blood flow and diameter effect in the navigation process of magnetic nanocarriers inside the carotid artery
Karvelas E.G., Lampropoulos N.K., Karakasidis T.E., Sarris I.E. (2022)Background and objective: Serious side effects are occurred during the cancer therapy. Magnetic driving of nanoparticles is a novel method for the elimination of these effects by supplying with anticancer drug or increase ...