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1. WO2014070151 - PRE-OBJECT FILTER FOR SHAPING PROFILE OF RADIATION ATTENTUATION IN FAN-ANGLE DIRECTION

Publication Number WO/2014/070151
Publication Date 08.05.2014
International Application No. PCT/US2012/062672
International Filing Date 31.10.2012
IPC
A61B 6/03 2006.1
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
A61B 6/06 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
06Diaphragms
G21K 1/10 2006.1
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
10Scattering devices; Absorbing devices
CPC
A61B 6/032
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
032Transmission computed tomography [CT]
A61B 6/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
06Diaphragms
A61B 6/4035
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
40with arrangements for generating radiation specially adapted for radiation diagnosis
4035the source being combined with a filter or grating
A61B 6/4078
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
40with arrangements for generating radiation specially adapted for radiation diagnosis
4064specially adapted for producing a particular type of beam
4078Fan-beams
G21K 1/10
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
10Scattering devices; Absorbing devices; Ionising radiation filters
Applicants
  • ANALOGIC CORPORATION [US]/[US]
Inventors
  • CHRISTENSEN, Matthew, B.
  • ROSHI, Aleksander
  • DEYKOON, Anton, M.
Agents
  • COOPER, William, J.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRE-OBJECT FILTER FOR SHAPING PROFILE OF RADIATION ATTENTUATION IN FAN-ANGLE DIRECTION
(FR) FILTRE DEVANT OBJET POUR FAÇONNAGE DE PROFIL D'ATTÉNUATION DE RAYONNEMENT DANS UNE DIRECTION D'ANGLE DE DISPERSION
Abstract
(EN)
Among other things, one or more systems and/or techniques are described for shaping a profile of radiation attenuation in a fan-angle direction via a pre-object filter (e.g., a bowtie filter) based upon a profile of an object. For example, a pre-object filter may be at least partially rotated about a filter axis and/or may be translated in a direction parallel to a direction of conveyance of the object under examination to adjust a profile of radiation attenuation in the fan-angle direction. Further, in one embodiment, the profile of radiation attenuation may be reshaped during rotation of the radiation source about the object to adjust an amount of radiation attenuation in the fan-angle direction (e.g., to adjust a profile of radiation attenuation as a shape of the object changes from a perspective of a radiation source as the radiation source is rotated about the object).
(FR)
Entre autres, la présente invention porte sur un ou plusieurs systèmes et/ou une ou plusieurs techniques de façonnage de profil d'atténuation de rayonnement dans une direction d'angle de dispersion par l'intermédiaire d'un filtre devant objet (par exemple, un filtre en nœud papillon) sur la base d'un profil d'un objet. Par exemple, un filtre devant objet peut être au moins partiellement mis en rotation autour d'un axe de filtre et/ou peut être translaté dans une direction parallèle à une direction de transport de l'objet soumis à un examen pour régler un profil d'atténuation de rayonnement dans la direction d'angle de dispersion. En outre, selon un mode de réalisation, le profil d'atténuation de rayonnement peut être refaçonné durant une rotation de la source de rayonnement autour de l'objet pour régler une quantité d'atténuation de rayonnement dans la direction d'angle de dispersion (par exemple, pour régler un profil d'atténuation de rayonnement à mesure qu'une forme de l'objet change depuis une perspective d'une source de rayonnement à mesure que la source de rayonnement est mise en rotation autour de l'objet).
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