Biofidelic Abdominal Aorta Phantom: Cross-Over Preliminary Study Using UltraSound and Digital Image Stereo-Correlation
Conclusion: The set-up and methods in this paper are validated and our proof of concept is established. Future work will focus on the simultaneous use of the two measurement tools (US and DISC) and the introduction of stent-grafts inside the phantom during pulsed cycles. Such measurements of local deformations and motions will help understanding possible complications of EVAR. Graphical abstract (Source: IRBM)
Source: IRBM - July 24, 2017 Category: Biomedical Engineering Source Type: research
Impact of Recirculation in Dynamic Contrast-Enhanced Ultrasound: A Simulation Study
Conclusion This simulation study demonstrates the influence of recirculation on the estimation of perfusion parameters. To reduce the impact of this unavoidable effect, the quantification method based on compartmental modeling and using a reference tissue appears to be the most reliable strategy. Graphical abstract (Source: IRBM)
Source: IRBM - July 22, 2017 Category: Biomedical Engineering Source Type: research
Joint Watermarking and Lossless JPEG-LS Compression for Medical Image Security
Publication date: Available online 21 July 2017 Source:IRBM Author(s): S. Haddad, G. Coatrieux, M. Cozic, D. Bouslimi In this paper, we present a new joint watermarking-compression scheme the originality of which stands on the combination of the lossless compression standard JPEG-LS with the bit substitution watermarking modulation. This scheme allows the access to watermarking-based security services without decompressing the image. It becomes possible to trace images or to verify their authenticity directly from their compressed bitstream. Performance of our scheme, expressed in terms of embedding capacity and dist...
Source: IRBM - July 21, 2017 Category: Biomedical Engineering Source Type: research
Functionalization of New Biocompatible Titanium Alloys with Harmonic Structure Design by Using UV Irradiation
Conclusion We have applied the methods used previously in the laboratory in terms of bioactive polymers grafting in particular by UV irradiation onto the surface of new developed titanium alloys with or without harmonic structure. In parallel, a preliminary biological response study to assess toxicity, cell viability, adhesion and morphology on the different titanium alloys functionalized or not by bioactive polymers giving encouraging results. Graphical abstract (Source: IRBM)
Source: IRBM - July 21, 2017 Category: Biomedical Engineering Source Type: research
3D Imaging with a Time Reversal Cavity: Towards Transcostal Focusing for Shock Wave Therapy
Publication date: Available online 11 July 2017 Source:IRBM Author(s): J. Robin, B. Arnal, M. Tanter, M. Pernot Time Reversal cavities (TRC) have been investigated in medical ultrasounds in the past, for either shockwave therapy or imaging. They indeed allow small foci formation in large regions of interest with a limited number of transducer elements. This paper is a preliminary study, establishing the proof of concept of a dual-mode TRC for both shockwave therapy and 3D imaging. A 128-element, 1 MHz power transducer placed in a reverberating cavity along with a multiply scattering medium was used. We were able to c...
Source: IRBM - July 11, 2017 Category: Biomedical Engineering Source Type: research
