Concept

Échocardiographie de contraste

Publications associées (97)

Three-Dimensional Mapping of Transparent Objects Using Kerr Nonlinearity Measurement

We report a technique to produce three-dimensional maps of transparent objects using the Kerr coefficient as a contrast agent. The method is based on the spatial modifications of a probe pattern focused into the medium. (C) 2010 Optical Society of America ...

Ieee2012

Dynamic Annual Metrics for Contrast in Daylit Architecture

Marilyne Andersen, Siobhan Francois Rockcastle

Daylight is a dynamic source of illumination in architectural space, creating diverse and ephemeral configurations of light and shadow within the built environment. It can generate contrasting levels of brightness between distinct geometries or it can high ...

2012

DCE-MRI using small-molecular and albumin-binding contrast agents in experimental carcinomas with different stromal content

Alessandro Daducci

OBJECTIVES: To compare DCE-MRI experiments performed using a standard small-molecular (Gd-DTPA) and an albumin-binding (MS-325) contrast agent in two carcinoma models with different stromal content. MATERIALS AND METHODS: DU-145 or BXPC-3 cancer cells were ...

Elsevier2011

Imaging with second-harmonic radiation probes in living tissue

Demetri Psaltis, Ye Pu, Rachel Grange, Chia-Lung Hsieh, Thomas Jean Victor Marie Lanvin

We demonstrate that second-harmonic radiation imaging probes are efficient biomarkers for imaging in living tissue. We show that 100 nm and 300 nm BaTiO3 nanoparticles used as contrast markers could be detected through 50 mu m and 120 mu m of mouse tail ti ...

2011

Hard x-ray Zernike microscopy reaches 30 nm resolution

Giorgio Margaritondo, Vincent Gajdosik

Since its invention in 1930, Zernike phase contrast has been a pillar in optical microscopy and more recently in x-ray microscopy, in particular for low-absorption-contrast biological specimens. We experimentally demonstrate that hard-x-ray Zernike microsc ...

Optical Society of America2011

Continuous-Domain ARMA Modeling for Ultrasound Tissue Characterization

Michaël Unser, Simona Maggio

In this study, we investigate the possibility of applying a continuous-time ARMA (CARMA) model to radio-frequency ultrasound signals. We consider the effect of the discretization process on the parameters of the continuous system, and we take into account ...

IEEE2011

Towards an Autonomous Evolution of Non-Biological Physical Organisms

Francesco Mondada, Michael Bonani, Stéphane Magnenat, Roderich Gross, Lorenz Küchler

We propose an experimental study where simplistic organ- isms rise from inanimate matter and evolve solely through physical interactions. These organisms are composed of three types of macroscopic building blocks floating in an agitated medium. The dynamis ...

Springer Verlag2011

Electrostatic torsional vertical flaps for reflective MEMS display

Nico de Rooij, Wilfried Noell, Fabio Jutzi

A new kind of high contrast, MEMS-based reflective display system is being developed. The system consists of light reflective flaps on an optically absorptive surface. The novelty is that the flaps are in vertical position at their rest state. They can be ...

IEEE2011

Vertical electrostatically 90° turning flaps for reflective MEMS display

Nico de Rooij, Wilfried Noell, Fabio Jutzi

A new kind of MEMS reflective display is being developed having high contrast and reflectivity, better than on printed paper. The system is based on novel vertical flaps, which can be electrostatically turned by 90° to horizontal position. After fabricatio ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Synchrotron microangiography studies of angiogenesis in mice with microemulsions and gold nanoparticles

Giorgio Margaritondo, Chao Wang

We present an effective solution for the problem of contrast enhancement in phase-contrast microangiography, with the specific objective of visualising small (< 8 A mu m) vessels in tumor-related microangiogenesis. Different hydrophilic and hydrophobic con ...

Springer Verlag2010

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