Signal-to-noise measurements in magnitude images from NMR phased arrays
نویسندگان
چکیده
منابع مشابه
Signal-to-noise measurements in magnitude images from NMR phased arrays.
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 ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 1997
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.1910380524