Analysis of the Signal to Noise Ratio and Contrast to Noise Ratio in Magnetic Resonance Images at Three Magnetic Field Intensities

  • M. Noda Centro de Biofísica Médica. Universidad de Oriente. Santiago de Cuba. Cuba
  • E. González Centro de Biofísica Médica. Universidad de Oriente. Santiago de Cuba. Cuba
  • C. Cabal Centro de Biofísica Médica. Universidad de Oriente. Santiago de Cuba. Cuba

Abstract

The quantitative analysis of quality descriptors in magnetic resonance images, as well as their intrinsic information, is affected by physical and instrumental factors. The evaluation of these factors by means of the signal-tonoise ratio, the contrast-to-noise ratio, tissue contrast and non-uniformity of the image, constitutes a comparison tool for images and their possibilities, at low and high magnetic fields. To attenuate the effect of these factors, a radiofrequency field intensity correction is applied. The behavior of the aforementioned descriptors is studied in eight magnetic resonance machines at three magnetic field intensities, before and after having applied the intensity correction. The correct application of the intensity correction improves the descriptors’ value, making their experimental values more comparable to the theoretical behavior. The methodology used permits the comparison among equipments of different magnetic field intensities and different manufacturers.

Published
Dec 5, 2009
How to Cite
NODA, M.; GONZÁLEZ, E.; CABAL, C.. Analysis of the Signal to Noise Ratio and Contrast to Noise Ratio in Magnetic Resonance Images at Three Magnetic Field Intensities. Revista Cubana de Física, [S.l.], v. 26, n. 2A, p. 144-149, dec. 2009. ISSN 2224-7939. Available at: <https://revistacubanadefisica.org/index.php/rcf/article/view/RCF_26-2A_144_2009>. Date accessed: 29 mar. 2024.