The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
A. Mito - One of the best experts on this subject based on the ideXlab platform.
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Real-time Two-Dimensional Imaging in scattering media by use of a femtosecond Cr4+: forsterite laser
Optics Letters, 2000Co-Authors: Emmanuel Abraham, E. Bordenave, N. Tsurumachi, Gediminas Jonusauskas, J. Oberle, C. Rulliere, A. MitoAbstract:An original femtosecond Cr4+:forsterite laser source associated with a nonlinear optical correlator was used for Imaging through scattering media with 1220-nm light. The system, which operates as an ultrafast optical gate by sum-frequency generation in a nonlinear crystal, was able to detect the light reflected from a resolution chart hidden in a turbid medium, at an attenuation of as much as 15 mean free paths. When the object was illuminated with a collimated beam, real-time Two-Dimensional images were obtained, with a maximum transverse resolution of ∼20 µm.
Alain Brun - One of the best experts on this subject based on the ideXlab platform.
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Video rate depth resolved two dimensionnal Imaging through turbid media by femtosecond parametric amplification
Optics Letters, 2000Co-Authors: Claude Doule, Patrick Georges, Thierry Lépine, Alain BrunAbstract:We report Two-Dimensional Imaging through a liquid scattering medium by noncollinear femtosecond parametric amplif ication in a ref lection configuration. The experiment presented permits direct observation at video rate of Two-Dimensional images with 24-mm depth resolution and 90-mm transverse resolution for an area with a 2.5-mm diameter on the object. These resolutions are achievable through a turbid phantom with a depth near 12 scattering mean free paths in double pass
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Real-time Two-Dimensional Imaging through scattering media using 80-fs-gated parametric amplification
Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers, 1Co-Authors: C. Doule, T. Lepine, Patrick Georges, Alain BrunAbstract:Summary form only given. In a previous work, we have reported on point-to-point Imaging in a highly scattering medium using type-I parametric amplification in the femtosecond regime. Although high-resolved Two-Dimensional Imaging by type-II parametric amplification has already been shown in the picosecond regime, we demonstrate, in this paper, the feasibility of this method for real-time Two-Dimensional Imaging with 80-fs pulses. Because of the angular acceptance of the crystal, we cannot focus tightly on the crystal, as in the point to point configuration, without degrading the transverse resolution. As the gain decreases in consequence, we choose the type II configuration, allowing us to work with the cross-polarized idler beam and to operate on dark field.
S L Adamson - One of the best experts on this subject based on the ideXlab platform.
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applications for multifrequency ultrasound biomicroscopy in mice from implantation to adulthood
Physiological Genomics, 2002Co-Authors: Yuqing Zhou, F S Foster, M Y Zhang, Kasia Harasiewicz, S L AdamsonAbstract:A new multifrequency (19–55 MHz) ultrasound biomicroscope with Two-Dimensional Imaging and integrated Doppler ultrasound was evaluated using phantoms and isoflurane-anesthetized mice. Phantoms reve...
Tarek Kashour - One of the best experts on this subject based on the ideXlab platform.
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ECHO ROUNDS: Percutaneous Balloon Valvuloplasty for Pulmonic Stenosis: The Role of Multimodality Imaging: PERCUTANEOUS BALOON VALVULOPLASTY FOR PULMONIC STENOSIS
Echocardiography-a Journal of Cardiovascular Ultrasound and Allied Techniques, 2008Co-Authors: Davinder S. Jassal, Amar Thakrar, Stephen Allan Schaffer, Tielan Fang, Iain D.c. Kirkpatrick, Tarek KashourAbstract:Pulmonic valvular stenosis represents the most frequent cause of right ventricular outflow obstruction. Transthoracic echocardiography is the Imaging modality of choice in the diagnosis, evaluation and longitudinal follow-up of individuals with pulmonic stenosis (PS). Although valvular PS is usually diagnosed by Two-Dimensional Imaging, Doppler echocardiography allows for the quantification of severity of the valvular lesion. In patients with limited acoustic windows, computed tomography and cardiac magnetic resonance Imaging may provide complementary anatomical characterization of the pulmonic annulus and valve prior to percutaneous balloon valvuloplasty.
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percutaneous balloon valvuloplasty for pulmonic stenosis the role of multimodality Imaging
Echocardiography-a Journal of Cardiovascular Ultrasound and Allied Techniques, 2008Co-Authors: Davinder S. Jassal, Amar Thakrar, Stephen Allan Schaffer, Tielan Fang, Iain D.c. Kirkpatrick, Tarek KashourAbstract:: Pulmonic valvular stenosis represents the most frequent cause of right ventricular outflow obstruction. Transthoracic echocardiography is the Imaging modality of choice in the diagnosis, evaluation and longitudinal follow-up of individuals with pulmonic stenosis (PS). Although valvular PS is usually diagnosed by Two-Dimensional Imaging, Doppler echocardiography allows for the quantification of severity of the valvular lesion. In patients with limited acoustic windows, computed tomography and cardiac magnetic resonance Imaging may provide complementary anatomical characterization of the pulmonic annulus and valve prior to percutaneous balloon valvuloplasty.
Emmanuel Abraham - One of the best experts on this subject based on the ideXlab platform.
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Real-time Two-Dimensional Imaging in scattering media by use of a femtosecond Cr4+: forsterite laser
Optics Letters, 2000Co-Authors: Emmanuel Abraham, E. Bordenave, N. Tsurumachi, Gediminas Jonusauskas, J. Oberle, C. Rulliere, A. MitoAbstract:An original femtosecond Cr4+:forsterite laser source associated with a nonlinear optical correlator was used for Imaging through scattering media with 1220-nm light. The system, which operates as an ultrafast optical gate by sum-frequency generation in a nonlinear crystal, was able to detect the light reflected from a resolution chart hidden in a turbid medium, at an attenuation of as much as 15 mean free paths. When the object was illuminated with a collimated beam, real-time Two-Dimensional images were obtained, with a maximum transverse resolution of ∼20 µm.
