Browsing by Subject "Ultrasound images"

Now showing items 1-16 of 16

    • Conference Object  

      AM-FM representations for the characterization of carotid plaque ultrasound Images 

      Christodoulou, Christodoulos I.; Pattichis, Constantinos S.; Murray, V.; Pattichis, Marios S.; Nicolaïdes, Andrew N. (2008)
      Stroke is the third leading cause of death in the western world and a major cause of disability in adults. The objective of this work was to investigate the use of AM-FM representations for the characterization of carotid ...
    • Conference Object  

      Atherosclerotic carotid wall segmentation in ultrasound images using Markov random fields 

      Petroudi, Styliani; Loizou, Christos P.; Pattichis, Constantinos S. (2010)
      This work explores the segmentation of the intima-media complex (IMC) of the common carotid artery (CCA) wall for the evaluation of the intima media thickness (IMT) on B-mode ultrasound images. The IMT provides important ...
    • Article  

      Classification of atherosclerotic carotid plaques using morphological analysis on ultrasound images 

      Kyriacou, Efthyvoulos C.; Pattichis, Marios S.; Pattichis, Constantinos S.; Mavrommatis, A.; Christodoulou, Christodoulos I.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2009)
      The aim of this study was to investigate the usefulness of multilevel binary and gray scale morphological analysis in the assessment of atherosclerotic carotid plaques. Ultrasound images were recorded from 137 asymptomatic ...
    • Article  

      Despeckle filtering for multiscale amplitude-modulation frequency-modulation (AM-FM) texture analysis of ultrasound images of the intima-media complex 

      Loizou, Christos P.; Murray, V.; Pattichis, Marios S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S. (2014)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). Typically, the IMT grows with age and this is used as a sign of increased risk of ...
    • Article  

      Evaluation of the risk of stroke with confidence predictions based on ultrasound carotid image analysis 

      Lambrou, Alexandra; Papadopoulos, Harris; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Pattichis, Marios S.; Gammerman, A.; Nicolaïdes, Andrew N. (2012)
      Conformal Predictors (CPs) are Machine Learning algorithms that can provide reliable confidence measures to their predictions. In this work, we make use of the Conformal Prediction framework for the assessment of stroke ...
    • Conference Object  

      A fully automated method using active contours for the evaluation of the intima-media thickness in carotid US images 

      Petroudi, Styliani; Loizou, Christos P.; Pantzaris, Marios C.; Pattichis, Marios S.; Pattichis, Constantinos S. (2011)
      The thickness of the intima-media complex (IMC) of the common carotid artery (CCA) wall is important in the evaluation of the risk for the development of atherosclerosis. This paper presents a fully automated algorithm for ...
    • Article  

      Manual and automated media and intima thickness measurements of the common carotid artery 

      Loizou, Christos P.; Pattichis, Constantinos S.; Nicolaïdes, Andrew N.; Pantzaris, Marios C. (2009)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of the development of cardiovascular disease (CVD). It was proposed but not thoroughly investigated that the media ...
    • Conference Object  

      An MPEG-7 image retrieval system of atherosclerotic carotid plaque images 

      Ioakim, Gianna; Kyriacou, Efthyvoulos C.; Sofokleous, Anastasis A.; Chistodoulou, C.; Pattichis, Constantinos S. (2012)
      This paper proposes an MPEG-7-based ultrasound image retrieval system which can assist in studying and analyzing images from atherosclerotic carotid plaques. The proposed system is able to retrieve and sort ultrasound ...
    • Article  

      Multiscale amplitude-modulation frequency-modulation (AM-FM) texture analysis of ultrasound images of the intima and media layers of the carotid artery 

      Loizou, Christos P.; Murray, V.; Pattichis, Marios S.; Pantzaris, Marios C.; Pattichis, Constantinos S. (2011)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). Clinically, there is strong interest in identifying how the composition and texture ...
    • Conference Object  

      Multiscale morphological analysis of the atherosclerotic carotid plaque 

      Kyriacou, Efthyvoulos C.; Pattichis, Marios S.; Christodoulou, Christodoulos I.; Pattichis, Constantinos S.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2005)
      The aim of this paper was to investigate the usefulness of multiscale morphological analysis in the assessment of atherosclerotic carotid plagues. Ultrasound images were recorded from 137 asymptomatic and 137 symptomatic ...
    • Article  

      Prediction of high-risk asymptomatic carotid plaques based on ultrasonic image features 

      Kyriacou, Efthyvoulos C.; Petroudi, Styliani; Pattichis, Constantinos S.; Pattichis, Marios S.; Griffin, Maura B.; Kakkos, Stavros K.; Nicolaïdes, Andrew N. (2012)
      Carotid plaques have been associated with ipsilateral neurological symptoms. High-resolution ultrasound can provide information not only on the degree of carotid artery stenosis but also on the characteristics of the ...
    • Conference Object  

      Speckle reduction in ultrasound images of atherosclerotic carotid plaque 

      Loizou, Christos P.; Christodoulou, Chris C.; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (Institute of Electrical and Electronics Engineers Inc., 2002)
      The objective of this work was to develop six speckle reduction-filtering techniques and evaluate them together with texture analysis in the assessment of 240 ultrasound images of the carotid artery. The de- speckled filters ...
    • Conference Object  

      Suggesting a sonographic index to measure ultrasound diaphragmatic MRR 

      Loizou, Christos P.; Loizou, Christos P.; Matamis, D.; Soleimezi, E.; Minas, G.; Pattichis, Constantinos S. (Springer Verlag, 2016)
      Measurements of ultrasound diaphragmatic motion may provide important and essential information about diaphragmatic fatigue. In this work, we propose a semiautomated analysis system for measuring the diaphragmatic motion ...
    • Conference Object  

      Texture analysis of the media-layer of the left and right common carotid artery 

      Loizou, Christos P.; Georgiou, Niki; Griffin, Maura B.; Kyriacou, Efthyvoulos C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S. (IEEE Computer Society, 2014)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is a well-known indicator of cardiovascular disease (CVD). The objective of this study was to investigate the application of texture analysis of the medial ...
    • Conference Object  

      Ultrasound image quality evaluation 

      Loizou, Christos P.; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Kyriacou, Efthyvoulos C.; Tyllis, Theodosis K.; Nicolaïdes, Andrew N. (Institute of Electrical and Electronics Engineers Inc., 2003)
      The objective of this work was to evaluate the image quality of two different ultrasound image scanners before and after de-speckle filtering. The evaluation was made by statistical and texture analysis, as well as by ...
    • Conference Object  

      Ultrasound imaging media layer texture analysis of the carotid artery 

      Loizou, Christos P.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Spanias, Andreas S.; Pattichis, Marios S.; Pattichis, Constantinos S. (2008)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is widely used as an early indicator of cardiovascular disease (CVD). It was proposed but not thoroughly investigated that the media layer (ML), its ...