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1. WO2020113157 - HIGH RESOLUTION TWO-DIMENSIONAL RESISTANCE TOMOGRAPHY

Publication Number WO/2020/113157
Publication Date 04.06.2020
International Application No. PCT/US2019/063846
International Filing Date 29.11.2019
IPC
A61B 5/03 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
03Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure
A61B 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
A61B 6/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
A61B 6/03 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
CPC
A61B 5/0044
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
0033Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
004adapted for image acquisition of a particular organ or body part
0044for the heart
A61B 5/0073
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
0059using light, e.g. diagnosis by transillumination, diascopy, fluorescence
0073by tomography, i.e. reconstruction of 3D images from 2D projections
A61B 5/03
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
03Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; ; Measuring pressure in body tissues or organs
A61B 6/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
A61B 6/03
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
Applicants
  • NORTHWESTERN UNIVERSITY [US]/[US]
Inventors
  • GRAYSON, Matthew Allen
  • WANG, Chulin
  • ONSAGER, Claire Cecelia
  • AYGEN, Can Cenap
  • COSTAKIS, Charles M.
  • LANG, Lauren E.
  • TZAVELIS, Andreas
  • ROGERS, John Ashley
Agents
  • WONG, Frankie W.
Priority Data
62/772,36928.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH RESOLUTION TWO-DIMENSIONAL RESISTANCE TOMOGRAPHY
(FR) TOMOGRAPHIE PAR RÉSISTANCE BIDIMENSIONNELLE À HAUTE RÉSOLUTION
Abstract
(EN)
The disclosed 2-D and 3-D tomographic resistance imaging method improves tomographic resistance image resolution by adopting an orthogonal basis with the maximum number of elements N to describe the maximum resolution resistivity map r(r), where this number of elements N is set according to the number of electrodes Q; by defining the orthogonal basis according to any known constraints in the problem, thereby enhancing the resolution where it is needed; by positioning electrodes to be sensitive to these basis functions; and by choosing current I and voltage V contact electrode pairs that maximize signal-to-noise ratio.
(FR)
Selon la présente invention, le procédé d'imagerie par résistance tomographique bidimensionnelle et tridimensionnelle améliore la résolution d'image de résistance tomographique grâce aux étapes suivantes : l'adoption d'une base orthogonale pourvue du nombre maximal d'éléments N pour décrire la carte de résistivité de résolution maximale r (r), ce nombre d'éléments N étant établi en fonction du nombre d'électrodes Q ; la définition de la base orthogonale en fonction de toutes les contraintes connues dans le problème, améliorant ainsi la résolution lorsque ceci est nécessaire ; le positionnement des électrodes pour qu'elles soient sensibles à ces fonctions de base ; le choix des paires d'électrodes de contact de courant I et de tension V qui maximisent le rapport signal sur bruit.
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