# Susceptibility effects in nuclear magnetic resonance imaging

## TL;DR

This paper analyzes how susceptibility-induced field inhomogeneities affect NMR signal dephasing and relaxation, which are crucial for understanding tissue properties in MRI, especially with contrast agents like deoxygenated blood and nanoparticles.

## Contribution

It provides a detailed analysis of susceptibility effects on NMR signal behavior, enhancing understanding of tissue contrast mechanisms in MRI.

## Key findings

- Susceptibility differences significantly influence NMR signal dephasing.
- Field inhomogeneities impact relaxation times and image contrast.
- Analysis aids in improving MRI techniques for biomedical applications.

## Abstract

The properties of dephasing and the resulting relaxation of the magnetization are the basic principle on which all magnetic resonance imaging methods are based. The signal obtained from the gyrating spins is essentially determined by the properties of the considered tissue. Especially the susceptibility differences caused by magnetized materials (for example, deoxygenated blood, BOLD-effect) or magnetic nanoparticles are becoming more important for biomedical imaging. In the present work, the influence of such field inhomogeneities on the NMR-signal is analyzed.