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1. WO2006102388 - 3D AND REAL-TIME ELECTRICAL CAPACITANCE VOLUME-TOMOGRAPHY: SENSOR DESIGN AND IMAGE RECONSTRUCTION

Publication Number WO/2006/102388
Publication Date 28.09.2006
International Application No. PCT/US2006/010352
International Filing Date 22.03.2006
IPC
G01N 27/22 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
02by investigating impedance
22by investigating capacitance
CPC
A61B 5/0535
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
053Measuring electrical impedance or conductance of a portion of the body
0535Impedance plethysmography
G01N 27/226
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
02by investigating impedance
22by investigating capacitance
226Construction of measuring vessels; Electrodes therefor
G01N 33/15
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
15Medicinal preparations ; ; Physical properties thereof, e.g. dissolubility
G01N 33/24
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
24Earth materials
G06T 11/006
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
112D [Two Dimensional] image generation
003Reconstruction from projections, e.g. tomography
006Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
G06T 2211/412
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2211Image generation
40Computed tomography
412Dynamic
Applicants
  • THE OHIO STATE UNIVERSITY [US]/[US] (AllExceptUS)
  • WARSITO, Warsito [ID]/[ID] (UsOnly)
  • MARASHDEH, Qussai [US]/[US] (UsOnly)
  • FAN, Liang-Shih [US]/[US] (UsOnly)
Inventors
  • WARSITO, Warsito
  • MARASHDEH, Qussai
  • FAN, Liang-Shih
Agents
  • SWANSON, Kristina, E.
Priority Data
60/664,02622.03.2005US
60/760,52920.01.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) 3D AND REAL-TIME ELECTRICAL CAPACITANCE VOLUME-TOMOGRAPHY: SENSOR DESIGN AND IMAGE RECONSTRUCTION
(FR) CONCEPTION DE CAPTEUR TOMOGRAPHIQUE EN VOLUME DE CAPACITANCE ELECTRIQUE EN TEMPS REEL ET EN 3D ET RECONSTRUCTION D'IMAGE
Abstract
(EN)
Dynamic three-dimensional image electrical capacitance tomography sensor system is disclosed. The technique generates, from the measured capacitance, a whole volume image of the region enclosed by the a geometrically three-dimensional capacitance sensor. A real time, three-dimensional imaging of a moving object or a real time volume imaging (i.e., four-dimensional (4D)) allows for a total interrogation scheme of the whole volume within the domain of an arbitrary shape of geometry to be implemented. The system comprises a 3D capacitance sensor, data acquisition electronics and the image reconstruction algorithm which enables the volume-image reconstruction. The electrode shape of the capacitance sensor can be rectangular, triangular, trapezium, or any shape to enclose a 3D section of the measuring domain and to distribute the electrical field intensity in three directions with equal sensitivity strength. The image reconstruction algorithm reconstructs simultaneously the image voxels in a three-dimensional array. The tomography sensor system may be multimodal.
(FR)
La présente invention concerne un système de capteur tomographique de capacitance électrique d'imagerie dynamique à trois dimensions. Selon cette invention, une image en volume globale de la région entourée par le capteur de capacitance à trois dimensions géométriques est produite à partir de la capacitance mesurée. Une imagerie à trois dimensions en temps réel d'un objet en mouvement ou une imagerie en volume en temps réel (c'est-à-dire à quatre dimensions (4D)) permet de mettre en oeuvre un schéma d'interrogation total de tout le volume à l'intérieur du domaine d'une forme géométrique arbitraire. Le système comprend un capteur de capacitance à trois dimensions, un système électronique d'acquisition de données et l'algorithme de reconstruction d'image qui permet la reconstruction de l'image en volume. La forme d'électrode du capteur de capacitance peut être rectangulaire, triangulaire, trapézoïdale ou n'importe quelle forme englobant une section à trois dimensions du domaine de mesure ou distribuant l'intensité de champ électrique dans trois directions avec une même sensibilité. L'algorithme de reconstruction d'image reconstruit simultanément les voxels d'image dans un réseau à trois dimensions. Le système de capteur tomographique peut être multimodal.
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EP6739231This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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