Combined Homogeneous Region Localization and Automated Evaluation of Radiation Dose Dependent Contrast-to-Noise Ratio in Dual Energy Abdominal CT

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8676)


This study presents a homogeneous region localization technique combined with automated evaluation of radiation dose-dependent contrast-to-noise ratio in dual energy abdominal CT. Patient body size was calculated using region growing segmentation and used to estimate size-specific dose estimate, and contrast-to-noise ratio are automatically evaluated by using proposed technique. Contrast-to-noise ratio turned out to be similar between low and high tube potential for both pre- and post-contrast phases, while radiation dose is remarkably lower at 80 kVp. Low tube potential can be recommended to reduce radiation dose while maintaining contrast-to-noise.


Dual energy CT Homogeneous region localization CT noise level Contrast-to-noise ratio Size-specific dose estimate 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Interdisciplinary Program in Radiation Applied Life ScienceSeoul National University College of MedicineSeoulKorea
  2. 2.Department of RadiologySeoul National University HospitalSeoulKorea
  3. 3.Program in Biomedical Radiation Sciences, Department of Transdisciplinary Studies, Graduate School of Convergence Science and TechnologySeoul National UniversitySuwonKorea
  4. 4.Advanced Institutes of Convergence TechnologySeoul National UniversitySuwonKorea

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