Now showing items 981-1000 of 1952

    • Article  

      Media thickness measurement of the common carotid artery. 

      Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Georgiou, Niki; Kyriacou, Efthyvoulos C. (2007)
      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 ...
    • Article  

      Quality evaluation of ultrasound imaging in the carotid artery based on normalization and speckle reduction filtering 

      Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Tyllis, Theodosis K.; Nicolaïdes, Andrew N. (2006)
      Image quality is important when evaluating ultrasound images of the carotid for the assessment of the degree of atherosclerotic disease, or when transferring images through a telemedicine channel, and/or in other image ...
    • Conference Object  

      Quantitative analysis of brain white matter lesions in multiple sclerosis subjects: Preliminary findings 

      Loizou, Christos P.; Pattichis, Constantinos S.; Seimenis, Ioannis; Eracleous, Eleni A.; Schizas, Christos N.; Pantzaris, Marios C. (2008)
      In this study the value of magnetic resonance image (MRI) shape and texture analysis was assessed in multiple sclerosis (MS) subjects, both in differentiating between normal and abnormal tissue and in assessing disease ...
    • Conference Object  

      Quantitative analysis of brain white matter lesions in multiple sclerosis subjects 

      Loizou, Christos P.; Pattichis, Constantinos S.; Seimenis, Ioannis; Pantzaris, Marios C. (2009)
      In this study the value of magnetic resonance image (MRI) shape and texture analysis was assessed in multiple sclerosis (MS) subjects, both in differentiating between normal or normal appearing and abnormal tissue and in ...
    • Article  

      Comparative evaluation of despeckle filtering in ultrasound imaging of the carotid artery 

      Loizou, Christos P.; Pattichis, Constantinos S.; Christodoulou, Christodoulos I.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (2005)
      It is well-known that speckle is a multiplicative noise that degrades the visual evaluation in ultrasound imaging. The recent advancements in ultrasound instrumentation and portable ultrasound devices necessitate the need ...
    • Conference Object  

      A comparison of ultrasound intima media thickness measurements of the left and right common carotid artery 

      Loizou, Christos P.; Pattichis, Constantinos S.; Georghiou, N.; Griffin, Maura B.; Nicolaïdes, Andrew N. (2013)
      The intima-media thickness (IMT) of the common carotid artery (CCA) is an established indicator of cardiovascular disease (CVD). There have been reports about the difference between the left and the right sides of the CCA ...
    • 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 ...
    • Article  

      An integrated system for the segmentation of atherosclerotic carotid plaque 

      Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (2007)
      In this paper, we propose and evaluate an integrated system for the segmentation of atherosclerotic plaque in ultrasound imaging of the carotid artery based on normalization, speckle reduction filtering, and four different ...
    • Conference Object  

      Media thickness measurement of the common carotid artery 

      Loizou, Christos P.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Georgiou, Niki; Kyriacou, Efthyvoulos C. (2007)
      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  

      Atherosclerotic carotid plaque segmentation 

      Loizou, Christos P.; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Nicolaïdes, Andrew N. (2004)
      Atherosclerosis is the major cause of heart attack and stroke in the western world. In this paper we present a computerized method for segmenting the athrerosclerotic carotid plaque from ultrasound images. The method uses ...
    • Conference Object  

      Quality evaluation of ultrasound imaging in the carotid artery 

      Loizou, Christos P.; Pattichis, Constantinos S.; Istepanian, Robert Sh Habib; Pantzaris, Marios C.; Tyllis, Theodosis K.; Nicolaïdes, Andrew N. (2004)
      Image quality assessment plays an important role in various image-processing applications. In this work we evaluate image quality criteria based on mean square error, signal to noise error, and quality and structural ...
    • 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  

      Brain MR image normalization in texture analysis of multiple sclerosis 

      Loizou, Christos P.; Pantzaris, Marios C.; Seimenis, Ioannis; Pattichis, Constantinos S. (2009)
      A problem that occurs in texture analysis and quantitative analysis of magnetic resonance imaging (MRI), is that the extracted results are not comparable between consecutive or repeated scans or, within the same scan, ...
    • Book  

    • Book  

    • Book  

      Despeckle filtering algorithms and software for ultrasound imaging 

      Loizou, Christos P.; Pattichis, Constantinos S. (Morgan & Claypool Publishers, 2008)
    • Article  

      Ultrasound image texture analysis of the intima and media layers of the common carotid artery and its correlation with age and gender 

      Loizou, Christos P.; Pantzaris, Marios C.; Pattichis, Marios S.; Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S. (2009)
      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 composition and texture of ...
    • Conference Object  

      M-mode state based identification in ultrasound videos of the atherosclerotic carotid plaque 

      Loizou, Christos P.; Pantzaris, Marios C.; Pattichis, Constantinos S.; Kyriacou, Efthyvoulos C. (2010)
      Monitoring the wall and plaque changes in the carotid artery (CA) can provide useful information for the assessment of the atherosclerotic disease. Using a motion mode (M-mode) image, detailed information may be obtained ...
    • Book Chapter  

      Despeckling 

      Loizou, Christos P.; Pattichis, Constantinos S. (Springer-Verlag London Ltd, 2012)
      The wide use of ultrasound imaging equipment, including mobile and portable telemedicine ultrasound scanning instruments and computer-aided systems, necessitates the need for better image processing techniques, in order ...
    • Book Chapter  

      Despeckle filtering of ultrasound images 

      Loizou, Christos P.; Pattichis, Constantinos S. (Springer New York, 2011)
      It is well known that speckle is a multiplicative noise that degrades the visual evaluation in ultrasound imaging. This necessitates the need for robust despeckling techniques for both routine clinical practice and ...