Patents by Inventor Wafa Skalli
Wafa Skalli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10478141Abstract: A method of estimating the distribution of bone mineral density in at least one portion of a person's skeleton. The method includes generating a geometrical representation of the portion of the skeleton; a geometrical representation in three dimensions of at least one portion of the outline of the person; and first and second X-ray images; and using software to estimate: a value for the thickness of soft tissue through which the given X-ray has passed; an attenuation coefficient of the soft tissues that have been passed through; a value for the thickness of bone tissue through which the given X-ray has passed; and using the thickness value for the soft tissue through which the given X-ray has passed, and a value for the attenuation of the given X-ray due to the thickness of the bone tissue through which it has passed, the software estimates a value representative of the bone mineral density of the bone tissues through which the given X-ray has passed.Type: GrantFiled: May 4, 2016Date of Patent: November 19, 2019Assignees: AMVALOR, ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERSInventor: Wafa Skalli
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Publication number: 20180146942Abstract: A method of estimating the distribution of bone mineral density in at least one portion of a person's skeleton. The method includes generating a geometrical representation of the portion of the skeleton; a geometrical representation in three dimensions of at least one portion of the outline of the person; and first and second X-ray images; and using software to estimate: a value for the thickness of soft tissue through which the given X-ray has passed; an attenuation coefficient of the soft tissues that have been passed through; a value for the thickness of bone tissue through which the given X-ray has passed; and using the thickness value for the soft tissue through which the given X-ray has passed, and a value for the attenuation of the given X-ray due to the thickness of the bone tissue through which it has passed, the software estimates a value representative of the bone mineral density of the bone tissues through which the given X-ray has passed.Type: ApplicationFiled: May 4, 2016Publication date: May 31, 2018Inventor: Wafa SKALLI
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Patent number: 9142020Abstract: Method for reconstruction of a three-dimensional model of an osteo-articular structure of a patient, wherein a) bi-dimensional patient-specific image data (41) of said structure is provided; (d) a preliminary solution, corresponding to a previously established solution model of the structure, is provided (42) from a base (21), said preliminary solution comprising a priori knowledge of the corresponding structure, previously established from structures of the same type, said preliminary solution comprising surface data describing the coordinates of the surface of the solution model, and bulk data describing at least one characteristic of the inside of the solution model; the preliminary solution is modified (42?, 43, 44, 46, 47, 48) to be brought in concordance with said patient-specific image data.Type: GrantFiled: October 31, 2008Date of Patent: September 22, 2015Assignees: Ecole National Superieure D'Arts Et Metiers (ENSAM), Ecole De Technologies SuperieureInventors: Jacques A. DeGuise, Benoit Godbout, Thierry Cresson, Ramnada Chav, Dominic Branchaud, Wafa Skalli, David Mitton
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Patent number: 8744826Abstract: A method of simulating the behavior of an articulated set of bone parts, in particular the vertebral column comprising a construction step of constructing a three-dimensional geometrical model from data that is specific to the subject in a reference position; and a mechanical customization step of determining the geometrical model by detailing at least some of the connection areas of the bone parts. The mechanical customization step includes a stage of customizing critical connection areas for the bone parts; a data acquisition stage of acquiring data concerning the articulated bone set of the subject during at least one clinical test of posture; and a characterization stage for characterizing the mechanical parameters of said junction areas in order to cause the model to reproduce the data acquired during the above-mentioned clinical test.Type: GrantFiled: December 4, 2007Date of Patent: June 3, 2014Assignees: Ecole Nationale Superieure d'Arts et Metiers, Centre National de la Recherche ScientifiqueInventors: Wafa Skalli, Yoann Lafon, Virginie Lafage, Jean-Paul Steib, Jean Dubousset, François Lavaste
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Patent number: 8660329Abstract: Method for reconstruction of a three-dimensional model of a body structure of a subject, said structure comprising a plurality of objects, wherein a database (21) of the structure is provided, the database comprising means to estimate, from a parameter of any object of the structure, another parameter for an object of the structure, a preliminary solution for a first object (L1) is modified to be brought in concordance with subject-specific data (23a, 23b), a reconstruction of the second object (T12) is obtained based on the modified first object and on the database of structure (21).Type: GrantFiled: May 25, 2007Date of Patent: February 25, 2014Assignees: Ecole Nationale Superieure d'Arts et Metiers (ENSAM), Centre National de la Recherche Scientifique (CNRS), Ecole de Technologie SuperieureInventors: Wafa Skalli, Ludovic Humbert, David Mitton, Jean Dubousset, Jacques De Guise, Benoit Godbout, Stefan Parent
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Patent number: 8335674Abstract: A method of producing a finite-element model of a unique body of complex shape having an outer surface that is known in the form of a cloud of points describing said surface analytically or algebraically in a determined frame of reference, the method comprising the steps of a) using a parameterizable and generic finite-element model made up of simple geometrical volumes and representative of the family to which the unique body belongs, b) adapting said model as a function of parameters describing the unique body that is to be modeled; c) in said frame of reference, adjusting the parameterized generic finite-element model and causing the surface nodes of said parameterized model to correspond to points of the known outer surface of the body by projecting said nodes onto said surface along a direction that is normal to the surface of the generic model, and d) using the nodes of the surface as control points for a three-dimensional interpolation method in order to personalize the internal finite elements of theType: GrantFiled: May 11, 2007Date of Patent: December 18, 2012Assignee: Societe d'Etudes et de Recherches de l'Ecole Nationale Superieure d'Arts et Metiers (Seram)Inventors: Laure Duchemin, Sébastien Laporte, David Mitton, Wafa Skalli
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Publication number: 20110015514Abstract: A method comprising: -providing acquisition data (34,38) of a patient, comprising acquisition data of a bone structure of the patient in a given position, providing a knowledge base (22,43,47), comprising data related to such bone structures, -determining a patient-specific position-specific finite-element model of the bone structure comprising: patient-specific three-dimensional geometry, patient-specific mechanical characteristics of the bone structure, and patient-specific position-specific mechanical load applied to the bone structure in the position.Type: ApplicationFiled: February 29, 2008Publication date: January 20, 2011Applicant: ECOLE NATIONAL SUPERIEURE D'ARTS ET METIERS (ENSAMInventors: Wafa Skalli, David Mitton, Jean Dubousset, Francois Lavaste
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Publication number: 20100241405Abstract: Method for reconstruction of a three-dimensional model of an osteo-articular structure of a patient, wherein a) bi-dimensional patient-specific image data (41) of said structure is provided; (d) a preliminary solution, corresponding to a previously established solution model of the structure, is provided (42) from a base (21), said preliminary solution comprising a priori knowledge of the corresponding structure, previously established from structures of the same type, said preliminary solution comprising surface data describing the coordinates of the surface of the solution model, and bulk data describing at least one characteristic of the inside of the solution model; the preliminary solution is modified (42?, 43, 44, 46, 47, 48) to be brought in concordance with said patient-specific image data.Type: ApplicationFiled: October 31, 2008Publication date: September 23, 2010Inventors: Jacques A. De Guise, Benoit Godbout, Thierry Cresson, Ramnada Chav, Dominic Branchaud, Wafa Skalli, David Mitton
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Patent number: 7801350Abstract: Method for radiographic imaging, in particular for measuring the bone mineral density of an osseous body, this method involving an operation which consists in determining the value of a composite index using, on the one hand, digitized radiological data, and, on the other hand, a three-dimensional generic model of said osseous body.Type: GrantFiled: November 27, 2003Date of Patent: September 21, 2010Assignee: Biospace InstrumentsInventors: Anthony Le Bras, Sami Kolta, David Mitton, Wafa Skalli, Jacques A. De Guise, Christian Roux, Sébastien Teysseyre, Jacques Fechtenbaum
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Publication number: 20100215236Abstract: A method of three-dimensionally reconstituting the shape of a singular body in a reference coordinate system and on the basis of initial imaging data acquired by an imaging system of the scanner or MRI type, wherein the method includes the steps of, constituting an approximate three-dimensional model of the singular body on the basis of a parameterizable generic model that is modified as a function of descriptive parameters derived from said initial data, and correcting the approximate model by comparing it (2) with the initial imaging data (D).Type: ApplicationFiled: August 1, 2008Publication date: August 26, 2010Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERS (ENSAM)Inventors: Erwan Jolivet, Jean-Denis Laredo, Wafa Skalli, David Mitton
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Publication number: 20100174673Abstract: Method for reconstruction of a three-dimensional model of a body structure of a subject, said structure comprising a plurality of objects, wherein a database (21) of the structure is provided, the database comprising means to estimate, from a parameter of any object of the structure, another parameter for an object of the structure, a preliminary solution for a first object (L1) is modified to be brought in concordance with subject-specific data (23a, 23b), a reconstruction of the second object (T12) is obtained based on the modified first object and on the database of structure (21).Type: ApplicationFiled: May 25, 2007Publication date: July 8, 2010Applicants: ECOLE DE TECHNOLOGIE SUPERIEURE, Centre National de la Recherche Scientifique-CNRS, Ecole Nationale Superieure D'Arts et Metiers(ENSAMInventors: Wafa Skalli, Ludovic Humbert, David Mitton, Jean Dubousset, Jacques De Guise, Benoit Godbout, Stefan Parent
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Publication number: 20100145663Abstract: A method of simulating the behavior of an articulated set of bone parts, in particular the vertebral column of a subject comprising a construction step of constructing a three-dimensional geometrical model of the set from data that is specific to the subject in a reference position; and a mechanical customization step of customizing the geometrical model by detailing at least some of the connection areas of the bone parts.Type: ApplicationFiled: December 4, 2007Publication date: June 10, 2010Applicants: ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Wafa Skalli, Yoann Lafon, Virginie Lafage, Jean-Paul Steib, Jean Dubousset, Francois Lavaste
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Patent number: 7639866Abstract: A radiographic imaging method for three-dimensional reconstruction in which the three-dimensional shape of a model representing an object is calculated from a geometrical model of the object that is known a priori, and obtained from a confinement volume of the object estimated from a geometrical pattern visible in two images and from knowledge of the positions of the sources. A geometrical model is used that comprises information making it possible using an estimator for the object to establish a geometrical characteristic for the model representing the object.Type: GrantFiled: December 22, 2003Date of Patent: December 29, 2009Assignee: Biospace MedInventors: Vincent Pomero, Wafa Skalli, Sylvain Deschenes, Jacques de Guise, Sébastien LaPorte, Benoit Godbout, Dominic Branchaud, André Bleau, David Mitton, Irène Dorion
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Publication number: 20090164176Abstract: A method of producing a finite-element model of a unique body of complex shape having an outer surface that is known in the form of a cloud of points describing said surface analytically or algebraically in a determined frame of reference, the method comprising the steps of a) using a parameterizable and generic finite-element model made up of simple geometrical volumes and representative of the family to which the unique body belongs, b) adapting said model as a function of parameters describing the unique body that is to be modeled; c) in said frame of reference, adjusting the parameterized generic finite-element model and causing the surface nodes of said parameterized model to correspond to points of the known outer surface of the body by projecting said nodes onto said surface along a direction that is normal to the surface of the generic model, and d) using the nodes of the surface as control points for a three-dimensional interpolation method in order to personalize the internal finite elements of theType: ApplicationFiled: May 11, 2007Publication date: June 25, 2009Inventors: Laure Duchemin, Sébastien Laporte, David Mitton, Wafa Skalli
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Patent number: 7241045Abstract: A calibration system is disclosed for a stereoradiographic device having an X-ray source and a vertical X-ray receiver, the calibration system includes a horizontal table which rotates between two reference positions that are separated by 90 degrees in a horizontal plane of the table. A vertical frame is fastened to the horizontal table and is symmetrical with an axis of rotation of the table, the frame accommodates a patient that remains stationary relative to the frame as the table is rotated between its two reference positions wherein corresponding X-ray photographs are taken. At least three markers made of radio-opaque material are firmly attached to the frame, one of the markers represents the origin of orthogonal X,Y and Z axes, a second of the markers is located at a predetermined point along the X-Y axes, the third marker located at a known distance along the Z axis, the markers defining respective distances Lx, Ly or H relative to the origin.Type: GrantFiled: May 23, 2003Date of Patent: July 10, 2007Assignees: Centre National de la Recherche Scientifique, Ecole Nationale Superieure d'Arts et MetiersInventors: Wafa Skalli, Raphaël Dumas, David Mitton, Philippe Bataille, Damien Quidet
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Publication number: 20060204069Abstract: Method for radiographic imaging, in particular for measuring the bone mineral density of an osseous body, this method involving an operation which consists in determining the value of a composite index using, on the one hand, digitized radiological data, and, on the other hand, a three-dimensional generic model of said osseous body.Type: ApplicationFiled: November 27, 2003Publication date: September 14, 2006Applicant: BIOSPACE INSTRUMENTSInventors: Anthony Le Bras, Sami Kolta, David Mitton, Wafa Skalli, Jacques de Guise, Christian Roux, Sebastien Teysseyre, Jacques Fechtenbaum
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Publication number: 20050147206Abstract: The invention relates to an RX stereoradiography device comprising a horizontal rotating plate (13) which is optionally translational, characterized in that said plate (13) can be oriented according to two angular positions at 90°, each of which in order to take two photos which are orthogonal in relation to the other, also characterized in that the device also comprises a frame (14) which is joined to the horizontal plate (13) and, optionally, an additional maintenance device (15) for receiving the subject and at least three markers (16) made of a radio-opaque material disposed in a connected manner on the frame (14), one of said markers (1) being identified as the origin of an orthogonal, three-dimensional point of reference and the other markers (16) being disposed in such a way that it is possible to provide, by projection, knowledge of at least one distance value between the markers (16) according to the three axes X, Y and Z of said point of reference, respectively Lx, Ly and H.Type: ApplicationFiled: May 23, 2003Publication date: July 7, 2005Applicant: ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERSInventors: Wafa Skalli, Raphael Dumas, David Mitton, Philippe Bataille, Damien Quidet
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Publication number: 20050008219Abstract: A radiographic imaging method for three-dimensional reconstruction in which the three-dimensional shape of a model representing an object is calculated from a geometrical model of the object that is known a priori, and obtained from a confinement volume of the object estimated from a geometrical pattern visible in two images and from knowledge of the positions of the sources. A geometrical model is used that comprises information making it possible using an estimator for the object to establish a geometrical characteristic for the model representing the object.Type: ApplicationFiled: December 22, 2003Publication date: January 13, 2005Inventors: Vincent Pomero, Wafa Skalli, Sylvain Deschenes, Jacques de Guise