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1. WO1996004684 - CCD X-RAY DENSITOMETER SYSTEM

Publication Number WO/1996/004684
Publication Date 15.02.1996
International Application No. PCT/US1995/009015
International Filing Date 18.07.1995
Chapter 2 Demand Filed 13.02.1996
IPC
H01L 27/148 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
14including semiconductor components sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
144Devices controlled by radiation
146Imager structures
148Charge coupled imagers
CPC
A61N 2005/1076
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
1048Monitoring, verifying, controlling systems and methods
1075for testing, calibrating, or quality assurance of the radiation treatment apparatus
1076using a dummy object placed in the radiation field, e.g. phantom
A61N 5/1048
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
1048Monitoring, verifying, controlling systems and methods
H01L 27/148
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
14including semiconductor components sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
144Devices controlled by radiation
146Imager structures
148Charge coupled imagers
Applicants
  • PHOTOELECTRON CORPORATION [US]/[US]
Inventors
  • SLISKI, Alan, P.
Agents
  • LAPPIN, Mark, G.
Priority Data
08/286,28505.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CCD X-RAY DENSITOMETER SYSTEM
(FR) SYSTEME DE DENSITOMETRE A CCD DESTINE A MESURER LES RAYONNEMENTS X
Abstract
(EN)
A system is disclosed for producing images representing radiation dose distribution in order to verify the radiation dose applied to a target area. The system uses a phantom assembly constructed of material that is the radiological equivalent of live tissue. The phantom assembly has slits where radiation sensitive film (28) can be inserted and can include a channel for an insertable radiation generating device. The treatment dose is then applied to the phantom and the radiation sensitive film records the dose. A CCD camera (20) microdensitometer is then used to read the exposed radiation sensitive film. The CCD microdensitomer includes a computer system (60) which processes the image to remove artifacts and generate isodose contours for the radiation treatment applied. In addition, several pieces of radiation sensitive film in different planes can be exposed and processed in order to produce images representing the radiation dose distribution in three dimensions.
(FR)
On décrit un système destiné à produire des images représentant la répartition de la dose de rayonnement de manière à vérifier la dose de rayonnement appliquée sur une zone cible, et dans lequel on utilise un ensemble fantôme réalisé dans un matériau qui est l'équivalent radiologique d'un tissu vivant. Cet ensemble fantôme possède des fentes dans lesquelles on peut insérer un film (28) sensible aux rayonnements et peut comprendre un canal destiné à l'insertion d'un dispositif de production de rayonnements. La dose de traitement est ensuite appliquée à l'ensemble fantôme et le film sensible aux rayonnements enregistre la dose. On utilise ensuite un microdensitomètre doté d'une caméra (20) à CCD afin de lire le film qui a été exposé. Ce microdensitomètre à CCD comprend un système (60) informatique qui traite l'image afin d'enlever les artéfacts et produit des contours isodoses pour le traitement aux rayonnements appliqué. En outre, plusieurs parties dudit film situées dans différents plans peuvent être exposées et traitées de manière à produire des images tridimensionnelles de la répartition de la dose de rayonnement.
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