Search

Your search keyword '"Dohi, R."' showing total 4 results
Start Over Author "Dohi, R."
4 results on '"Dohi, R."'

2. Experiments with the TER Tele-echography Robot

Author

Guerraz, Agnès, Hennion, Bernard, Vilchis, Adriana, Troccaz, Jocelyne, Cinquin, Philippe, Pellisier, Franck, Thorel, Pierre, Tondu, Bertrand, Courrèges, Fabien, Poisson, Gérard, Althuser, Marc, Ayoubi, Jean-Marc, France Télécom Recherche & Développement (FT R&D), France Télécom, Gestes Medico-chirurgicaux Assistés par Ordinateur (TIMC-IMAG-GMCAO), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA), Laboratoire de Vision et Robotique (LVR), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), CHU Grenoble, Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble, MENRT TER, T. Dohi, R. Kikinis, TER Consortium, Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), and Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)

Subjects
slave robot master-slave system, remote diagnostic, echography, haptic, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO]
Abstract

Volume 2488 / 2002; International audience; This paper presents a master-slave system applied to the remote diagnosis from echographic data. The motion of the master manipulator is remotely controlled by a physician and reproduced by a slave robot carrying the echographic probe. The contact force between the probe and the patient is fed back to operator allowing him to have a haptic virtual environment. The innovation of this haptic control is to preserve medical expert propioception and gesture feelings, which are necessary to synchronize the ultrasound images with the motion made by the medical doctor. The slave robot is a cable-driven manipulator using pneumatic artificial muscle actuators to control the motion of the ultrasound probe. In this paper we present the architecture and the performances of the slave robot and the first experiments of the master-slave remote echography system for examinations of pregnant women.

Published
2002

3. Synthesis of Topological Gels by Penetrating Polymerization Using a Molecular Net.

Author

Ohya Y, Dohi R, Seko F, Nakazawa Y, Mizuguchi KI, Shinzaki K, Yasui T, Ogawa H, Kato S, Yoshizaki Y, Murase N, and Kuzuya A

Abstract

Topological gels possess structures that are cross-linked only via physical constraints; ideally, no attractive intermolecular interactions act between their components, which yields interesting physical properties. However, most reported previous topological gels were synthesized based on supramolecular interlocked structures such as polyrotaxane, for which attractive intermolecular interactions are essential. Here, we synthesize a water-soluble "molecular net" (MN) with a large molecular weight and three-dimensional network structure using poly(ethylene glycol). When a water-soluble monomer (N-isopropylacrylamide) is polymerized in the presence of the MNs, the extending polymer chains penetrates the MNs to form an ideal topological MN gel with no specific attractive interactions between its components. The MN gels show unique physical properties as well a significantly high degree of swelling and high extensibility due to slipping of the physical cross-linking. We postulate this method to yield a new paradigm in gel science with unprecedented physical properties., (© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results