Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Changes in SNR and ADC According to the Increase in b Value in Liver Diffusion-Weighted Images

  • Cho, Jae-Hwan (Department of International Radiological Science, Hallym University of Graduate Studies) ;
  • Kim, Ham-Gyum (Department of Radiological Technology, Ansan College)
  • Received : 2012.05.17
  • Accepted : 2012.06.11
  • Published : 2012.09.30
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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 $s/mm^2$ 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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