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Medical & Biological Engineering & Computing

, Volume 57, Issue 1, pp 135–146 | Cite as

Fractal dimension based carotid plaque characterization from three-dimensional ultrasound images

  • Ran Zhou
  • Yongkang Luo
  • Aaron Fenster
  • John David Spence
  • Mingyue DingEmail author
Original Article
  • 138 Downloads

Abstract

Irregularity of the plaque surface associated with previous plaque rupture plays an important role in the risk estimation of stroke caused by carotid atherosclerotic lesions. Thus, the aim of this study is to develop and validate novel vulnerability biomarkers from three-dimensional ultrasound (3DUS) images by analyzing the surface morphological characteristics of carotid plaque using fractal geometry features. In the experiments, a total of 38 3DUS plaque images were obtained from two groups of patients treated with 80 mg of atorvastatin or placebo daily for 3 months respectively. Two types of 3D fractal dimensions (FDs) were used to describe the smoothness of plaque surface morphology and the roughness from intensity of 3DUS images. Student’s t test showed that the two fractal features were effective for detecting the statin-related changes in carotid atherosclerosis with p < 0.00023 and p < 0.0113 respectively. It was concluded that the 3D FD measurements were effective for analyzing carotid plaque characteristics and especially effective for evaluating the impact of atorvastatin treatment.

Graphical abstract

Keywords

Fractal dimension Carotid plaque characterization Three-dimensional ultrasound Vulnerable plaque 

Notes

Funding information

This work was financially supported by the National Nature Science Foundation of China (No. 81571754) and partly supported by the Special Research Fund for the Doctoral Program of Higher Education (No. 20130142130006) and the Innovation Research Foundation of Huazhong University of Science and Technology (No. 2013ZZGH018).

Compliance with ethical standards

Patients provided written informed consent to a study protocol approved by the University of Western Ontario Standing Board of Human Research Ethics.

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Copyright information

© International Federation for Medical and Biological Engineering 2018

Authors and Affiliations

  • Ran Zhou
    • 1
    • 2
  • Yongkang Luo
    • 1
    • 2
  • Aaron Fenster
    • 3
  • John David Spence
    • 3
    • 4
  • Mingyue Ding
    • 1
    • 2
    Email author
  1. 1.Medical Ultrasound Laboratory, Department of Biomedical Engineering, College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhanChina
  2. 2.Key Laboratory of Molecular Biophysics of Education Ministry of ChinaHuazhong University of Science and TechnologyWuhanChina
  3. 3.Imaging Research Laboratories, Robarts Research InstituteWestern UniversityLondonCanada
  4. 4.Stroke Prevention and Atherosclerosis Research Centre, Robarts Research InstituteWestern UniversityLondonCanada

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