The possibility of fixing velocities fluid motion in model porous medium (glass beads) by measuring the transverse relaxation time T 2 spin echo method is shown. magnetic field gradient arising due to difference permeability and causes a decrease average , wich makes it possible fix absence an external gradient. addition nanoparticles under study increases dependence on velocity sensitivity det...

introduction: the conventional methods of dosimetry are not capable of dosimetry in such a small volume of less than one cubic millimeter. although the polymer gel dosimetry method based on magnetic resonance imaging (mri) could achieve three dimensional dosimetry with high resolution, a spatial resolution evaluation based on gel dose modulation transfer function has not been investigated yet. ...

NMR relaxometry refers to the measurement of relaxation times (usually T1) as a function of magnetic field strength. It is usually accomplished using fast field-cycling (FFC), in which the magnetic field is switched rapidly between levels during the pulse sequence. By switching the magnetic field, the nuclear spins can “evolve” at a chosen magnetic field strength, after which the magnetic field...

During the acute time period following traumatic brain injury (TBI), noninvasive brain imaging tools such as magnetic resonance imaging (MRI) can provide important information about the clinical and pathological features of the injury and may help predict long-term outcomes. In addition to standard imaging approaches, several quantitative MRI techniques including relaxometry and diffusion MRI h...

Introduction: The Magnetisation Transfer (MT) effect is based on the exchange of magnetisation between two proton pools; ‘free’ (‘liquid’) and ‘restricted’ (macromolecular). This property allows the MR characteristics of the macromolecular component (usually ‘invisible’ using conventional MRI due to its very short T2) to be probed via selective saturation. Analysis is based on a 2-pool quantita...

Superparamagnetic iron oxide nanoparticles (SPIONs) have the potential to be used as multimodal imaging and cancer therapy agents due to their excellent magnetism and ability to generate reactive oxygen species when exposed to light. We report the synthesis of highly biocompatible SPIONs through a facile green approach using fruit peel extracts as the biogenic reductant. This green synthesis pr...