Techniques used to increase the resolving power of magnetic resonance images

Abstract

Magnetic resonance imaging is a method which can be used to obtain highly detailed and clear images of organs inside the body. The objective of this article is evaluation of techniques used to increase the resolving power of magnetic resonance images. The use of gradient techniques with high functionality will increase the spatial resolving power by reducing the field of view. The parallel imaging is also another new method for faster imaging with high resolving power. This method reduces the acquisition time using array coils and a greater number of independent frequency radio channels and information about the sensitivity of the receiver coil. The magnetic nanoparticles have created a huge revolution in methods of diagnosis and treatment in medical science as a group of nanomagnets. Magnetic nanoparticles with a size less than 100 nm are widely used as contrast agents in magnetic resonance imaging (MRI) in the presence of an external magnetic field.

Keywords: magnetic resonance imaging, resolving power, gradients with high capability,
parallel imaging, magnetic nanoparticles.