Signal-to-noise measurements in magnitude images from NMR phased arrays

Chris D. Constantinides, Ergin Atalar, Elliot McVeigh

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A method is proposed to estimate signal-to-noise ratio (SNR) values in phased array magnitude images, based on a region-of-interest (ROI) analysis. It is shown that the SNR can be found by correcting the measured signal intensity for the noise bias effects and by evaluating the noise variance as the mean square value of all the pixel intensities in a chosen background ROI, divided by twice the number of receivers used. Estimated SNR values are shown to vary spatially within a bound of 20% with respect to the true SNR values as a result of noise correlations between receivers.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Pages456-459
Number of pages4
Volume1
StatePublished - 1997
EventProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, USA
Duration: Oct 30 1997Nov 2 1997

Other

OtherProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityChicago, IL, USA
Period10/30/9711/2/97

Fingerprint

Signal to noise ratio
Nuclear magnetic resonance
Pixels

ASJC Scopus subject areas

  • Bioengineering

Cite this

Constantinides, C. D., Atalar, E., & McVeigh, E. (1997). Signal-to-noise measurements in magnitude images from NMR phased arrays. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 1, pp. 456-459). IEEE.

Signal-to-noise measurements in magnitude images from NMR phased arrays. / Constantinides, Chris D.; Atalar, Ergin; McVeigh, Elliot.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1 IEEE, 1997. p. 456-459.

Research output: Chapter in Book/Report/Conference proceedingChapter

Constantinides, CD, Atalar, E & McVeigh, E 1997, Signal-to-noise measurements in magnitude images from NMR phased arrays. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 1, IEEE, pp. 456-459, Proceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Chicago, IL, USA, 10/30/97.
Constantinides CD, Atalar E, McVeigh E. Signal-to-noise measurements in magnitude images from NMR phased arrays. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1. IEEE. 1997. p. 456-459
Constantinides, Chris D. ; Atalar, Ergin ; McVeigh, Elliot. / Signal-to-noise measurements in magnitude images from NMR phased arrays. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1 IEEE, 1997. pp. 456-459
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