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Changes in SNR and ADC According to the Increase in b Value in Liver Diffusion-Weighted Images |
Journal of Magnetics, Volume 17, Number 3, 30 Sep 2012, Pages 219-224 |
Jae-Hwan Cho (Department of International Radiological Science, Hallym University of Graduate Studies), Ham-Gyum Kim * |
Abstract |
In the present study, changes in signal-to-noise ratio (SNR) and apparent diffusion coefficient (ADC) of the diffusion- weighted images in the normal livers were investigated using changes in b values in 1.5 T MR (magnetic resonance) instruments. Respective diffusion-weighted images and ADC map images were obtained from 20 healthy individuals by increasing b values from 50 to 400 and 800 s/mm2 using 1.5T MR scanner between January 2011 and November 2011. At each ADC map image obtained at each b value, ADCs in the right hepatic lobe, spleen and kidney were measured. As a result, ADCs of the right hepatic lobe, spleen and kidney have gradually decreased in the diffusion-weighted images in accordance with the reduced b value. This outcome may be used as preliminary data for applications to various abdominal diseases.
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Keywords: liver; diffusion-weighted imaging; ADC map images; b value; ADC |
DOI: http://dx.doi.org/10.4283/JMAG.2012.17.3.219 |
Full Text: PDF |
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