Browsing by Subject "Ultrasonic applications"

Now showing items 1-9 of 9

    • 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  

      Atherosclerotic plaque ultrasound video encoding, wireless transmission, and quality assessment using H.264 

      Panayides, Andreas S.; Pattichis, Marios S.; Pattichis, Constantinos S.; Loizou, Christos P.; Pantzaris, Marios C.; Pitsillides, Andreas (2011)
      We propose a unifying framework for efficient encoding, transmission, and quality assessment of atherosclerotic plaque ultrasound video. The approach is based on a spatially varying encoding scheme, where video-slice ...
    • 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  

      Completely automated multiresolution edge snapper (CAMES): A new technique for an accurate carotid ultrasound IMT measurement and its validation on a multi-institutional database 

      Molinari, F.; Loizou, Christos P.; Zeng, G.; Pattichis, Constantinos S.; Pantzaris, Marios C.; Liboni, W.; Nicolaïdes, Andrew N.; Suri, J. S. (2011)
      Since 2005, our research team has been developing automated techniques for carotid artery (CA) wall segmentation and intima-media thickness (IMT) measurement. We developed a snake-based technique (which we named CULEX 1,2), ...
    • Conference Object  

      Fabrication and characterization of nanoscale heating sources ("nanoheaters") for nanomanufacturing 

      Jogdand, H.; Gulsoy, G.; Ando, T.; Chen, J.; Doumanidis, C. C.; Zhiyong, G.; Rebholz, Claus; Wong, P. (Affiliation: Dept. of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA, United StatesAffiliation: Dept. of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United StatesAffiliation: Dept. of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusAffiliation: Dept. of Chemical Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 0185, United StatesAffiliation: Dept. of Mechanical Engineering, Tufts University, Medford, MA, United StatesCorrespondence Address: Jogdand, H.Dept. of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA, United States, 2008)
      Nanoheater systems based on the exothermic reaction between aluminum and nickel were developed. Multilayered and powder-based heterostructures were fabricated and characterized, before and after ignition experiments, for ...
    • Conference Object  

      In vivo imaging of microvasculature using optical coherence tomography 

      Vakoc, B. J.; Lanning, R. M.; Tyrrell, J. A.; Padera, T. P.; Bartlett, L. A.; Stylianopoulos, T.; Munn, L. L.; Tearney, G. J.; Fukumura, D.; Jain, R. K.; Bouma, Brett E. (Correspondence Address: Vakoc, B. J., 2010)
      In vivo imaging technologies drive the development of improved cancer therapies by revealing critical aspects of the complex pathophysiology of solid tumors in small animal models[1]. The abnormal vascular function, which ...
    • 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  

      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  

      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 ...