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1. US20130114799 - Radiation imaging apparatus and phantom used for the same

Office États-Unis d'Amérique
Numéro de la demande 13696710
Date de la demande 10.05.2011
Numéro de publication 20130114799
Date de publication 09.05.2013
Numéro de délivrance 09408579
Date de délivrance 09.08.2016
Type de publication B2
CIB
A61B 6/14
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
6Appareils pour diagnostic par radiations, p.ex. combinés avec un équipement de thérapie par radiations
14Applications ou adaptations à l'art dentaire
A61B 6/02
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
6Appareils pour diagnostic par radiations, p.ex. combinés avec un équipement de thérapie par radiations
02Dispositifs pour établir un diagnostic dans des plans différents successifs; Diagnostic stéréoscopique utilisant des radiations
G06T 11/00
GPHYSIQUE
06CALCUL; COMPTAGE
TTRAITEMENT OU GÉNÉRATION DE DONNÉES D'IMAGE, EN GÉNÉRAL
11Génération d'images bidimensionnelles
A61B 6/00
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
6Appareils pour diagnostic par radiations, p.ex. combinés avec un équipement de thérapie par radiations
CPC
A61B 6/14
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
14Applications or adaptations for dentistry
A61B 6/025
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
025Tomosynthesis
A61B 6/027
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
027characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
A61B 6/0492
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
04Positioning of patients; Tiltable beds or the like
0492using markers or indicia for aiding patient positioning
A61B 6/4452
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of apparatus for radiation diagnosis
4429related to the mounting of source units and detector units
4452the source unit and the detector unit being able to move relative to each other
A61B 6/469
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
46with special arrangements for interfacing with the operator or the patient
467characterised by special input means
469for selecting a region of interest [ROI]
Déposants Tsutomu Yamakawa
TAKARA TELESYSTEMS CORP.
Koichi Ogawa
Akitoshi Katsumata
Masahiro Tsujita
Hideyuki Nagaoka
Inventeurs Tsutomu Yamakawa
Koichi Ogawa
Akitoshi Katsumata
Masahiro Tsujita
Hideyuki Nagaoka
Mandataires Harness, Dickey & Pierce, P.L.C.
Données relatives à la priorité 2010-109144 11.05.2010 JP
Titre
(EN) Radiation imaging apparatus and phantom used for the same
Abrégé
(EN)

In the imaging space provided by a panoramic imaging apparatus, a phantom is arranged. The phantom is located to a predetermined tomographic plane and includes markers which image known positional information with an X-ray beam. The X-ray beam from an X-ray source is acquired as X-ray transmission data by a detector, and a panoramic image is produced using the data. Based on known positional information of the markers and information of marker positions in the panoramic image, distance information (Rs, Rd) between the X-ray tube and the detector and height information (B1) of the X-ray tube to the detector are calculated. From this calculated results and the acquired data, parameters (Δx/ΔFi, θ, Δθ/ΔFi, D, A, CX, CY) defining positional relationships among the X-ray tube, the detector, and the tomographic plane are calculated such that amounts of changes in the position connecting the X-ray tube and the detector are considered in the parameters. This allows the parameters to be calibrated for 3D image reconstruction.