Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Author "Averkiou, Michalakis A."
Now showing items 1-20 of 25
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Article
Automatic respiratory gating for contrast ultrasound evaluation of liver lesions
Christofides, Damianos; Leen, Edward; Averkiou, Michalakis A. (2014)Dynamic contrast-enhanced ultrasound (DCEUS) has been used in radiology for many years for lesion detection and characterization. In recent years, more emphasis has been placed on tumor perfusion quantification with DCEUS. ...
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Book Chapter
Cavitation: Its role in stone comminution and renal injury
Averkiou, Michalakis A.; Crum, L. A. (Igaku-Shoin Medical Publishers Ltd, 1995)
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Article
Doxorubicin liposome-loaded microbubbles for contrast imaging and ultrasound-triggered drug delivery
Escoffre, Jean-Michel; Mannaris, Christophoros; Geers, Bart; Novell, Anthony; Lentacker, Ine; Averkiou, Michalakis A.; Bouakaz, Ayache (2013)Targeted drug delivery under image guidance is gaining more interest in the drug-delivery field. The use of microbubbles as contrast agents in diagnostic ultrasound provides new opportunities in noninvasive image-guided ...
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Article
The Future of Biomedical Ultrasound: Nonlinear imaging
Burns, Peter N.; Simpson, D. Hope; Averkiou, Michalakis A. (2000)
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Conference Object
Harmonic Generation in Tissue with Matrix Arrays for 4D Cardiac THI
Lai, Ting-Yu; Kou, Sitai; Bruce, Matthew; Loupas, Thanasis; Averkiou, Michalakis A. (2019)Combining 4D echocardiography and tissue harmonic imaging (THI) may improve image quality and consequently diagnosis of heart disease. Beamforming considerations such as methodology for sampling the volume with ultrasound ...
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Article
Imagerie acoustique et optique des milieux biologiques Optical and acoustical imaging of biological media: Tissue harmonic ultrasonic imaging
Averkiou, Michalakis A. (2001)Harmonic imaging was originally developed for microbubble contrast agents in the early 90s under the assumption that tissue is linear and all harmonic echoes are generated by the bubbles. In fact, tissue, like bubbles, is ...
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Article
Improvement in Endocardial Border Delineation Using Tissue Harmonic Imaging
Becher, Harald; Tiemann, Klaus; Schlosser, Thomas; Pohl, Christoph; Nanda, Navin C.; Averkiou, Michalakis A.; POWERS, JEFF; Luderitz, Berndt (1998)
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Article
Improvement of the accuracy of liver lesion DCEUS quantification with the use of automatic respiratory gating
Christofides, Damianos; Leen, Edward; Averkiou, Michalakis A.; Leen, Edward L. S.; Averkiou, Michalakis A. (2016)Objectives: To evaluate the efficiency of automatic respiratory gating (ARG) in reducing respiratory motion-induced artefacts from dynamic contrast-enhanced ultrasound (DCEUS) acquisitions and to assess the impact of ARG ...
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Conference Object
The Linear and Nonlinear Ultrasound Field of Convex Arrays Operating in a Diverging Wave Mode
Lai, Ting-Yu; Averkiou, Michalakis A. (2018)High frame rate (ultrafast) ultrasound imaging has received a lot of attention recently. Ultrafast imaging facilitated innovations such as shear wave elastography, super-resolution imaging, and ultrafast contrast-enhanced ...
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Article
Measurements of harmonic generation in a focused finite-amplitude sound beam
Averkiou, Michalakis A.; Hamilton, Mark F. (1995)Measurements of harmonic generation in the sound field radiated by a focused circular piston source are compared with numerical calculations based on the nonlinear parabolic wave equation. The large dynamic range and high ...
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Article
Modeling of an electrohydraulic lithotripter with the KZK equation
Averkiou, Michalakis A.; Cleveland, Robin O. (1999)The acoustic pressure field of an electrohydraulic extracorporeal shock wave lithotripter is modeled with a nonlinear parabolic wave equation (the KZK equation). The model accounts for diffraction, nonlinearity, and ...
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Article
Modeling of the Acoustic Field Produced by Diagnostic Ultrasound Arrays in Plane and Diverging Wave Modes
Lai, Ting-Yu; Bruce, Matthew; Averkiou, Michalakis A. (2019)Recent advances in ultrafast contrast imaging have facilitated innovations, such as superresolution imaging and ultrafast contrast-enhanced Doppler imaging. Combining plane and diverging wave imaging (PWI/DWI) with tissue ...
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Article
Nonlinear distortion of short pulses radiated by plane and focused circular pistons
Averkiou, Michalakis A.; Hamilton, Mark F. (1997)Detailed measurements of finite-amplitude pulses radiated by plane and focused circular pistons in water are presented. Comparisons of time waveforms and frequency spectra, both on and off axis, are made with numerical ...
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Article
Nonlinear imaging
Burns, P. N.; Simpson, D. Hope; Averkiou, Michalakis A. (2000)
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Article
Original Contribution: Quantification of Tumor Microvascularity with Respiratory Gated Contrast Enhanced Ultrasound for Monitoring Therapy
Averkiou, Michalakis A.; Lampaskis, Marios; Kyriakopoulou, Konstantina; Skarlos, Dimosthenis; Klouvas, Georgios; Strouthos, Costas; Leen, Edward (2010)The aim of this feasibility study was to evaluate the response to cytotoxic and antiangiogenic treatment of colorectal liver metastasis using respiratory gated contrast enhanced ultrasonography. Seven patients were monitored ...
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Book Chapter
Physical Principles of CEUS
Eisenbrey, J.; Frosberg, F.; Averkiou, Michalakis A. (Elsevier, 2019)
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Article
Quantification of Tumor Microvascularity with Respiratory Gated Contrast Enhanced Ultrasound for Monitoring Therapy
Averkiou, Michalakis A.; Lampaskis, Marios; Kyriakopoulou, Konstantina; Skarlos, Dimosthenis; Klouvas, Georgios; Strouthos, Costas; Leen, Edward (2010)Abstract: The aim of this feasibility study was to evaluate the response to cytotoxic and antiangiogenic treatment of colorectal liver metastasis using respiratory gated contrast enhanced ultrasonography. Seven patients ...
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Book Chapter
Safety and Biological Effect of Microbubble-based Contrast Agents
Averkiou, Michalakis A.; Frosberg, F.; Eisenbrey, J. (Elsevier, 2019)
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Article
Self-demodulation of amplitude- and frequency-modulated pulses in a thermoviscous fluid
Averkiou, Michalakis A.; Lee, Yang-Sub; Hamilton, Mark F. (1993)The self-demodulation of pulsed sound beams in a thermoviscous fluid is investigated experimentally and theoretically. Experiments were performed in glycerin at megahertz frequencies with amplitude- and frequency-modulated ...
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Article
Tissue harmonic ultrasonic imaging
Averkiou, Michalakis A. (2001)Harmonic imaging was originally developed for microbubble contrast agents in the early 90s under the assumption that tissue is linear and all harmonic echoes are generated by the bubbles. In fact, tissue, like bubbles, is ...