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1. WO2020139590 - MULTILEAF COLLIMATOR WITH ALTERNATING TRAPEZOIDAL LEAF GEOMETRY DESIGN

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Publication Number WO/2020/139590
Publication Date 02.07.2020
International Application No. PCT/US2019/066430
International Filing Date 16.12.2019
IPC
A61N 5/10 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
CPC
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
A61N 2005/1095
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
1092Details
1095Elements inserted into the radiation path within the system, e.g. filters or wedges
A61N 5/1045
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
1042with spatial modulation of the radiation beam within the treatment head
1045using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT
A61N 5/1081
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5Radiation therapy
10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
1077Beam delivery systems
1081Rotating beam systems with a specific mechanical construction, e.g. gantries
G21K 1/02
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
02using diaphragms, collimators
G21K 1/025
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
02using diaphragms, collimators
025using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation
Applicants
  • VARIAN MEDICAL SYSTEMS, INC. [US]/[US]
  • VARIAN MEDICAL SYSTEMS INTERNATIONAL AG [CH]/[CH]
Inventors
  • RIEGER, Rachel
  • KAUPPINEN, Juha
  • MAGLIARI, Anthony
  • BAIC, Dusan
Agents
  • HOU, Tianjun
Priority Data
16/236,11228.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTILEAF COLLIMATOR WITH ALTERNATING TRAPEZOIDAL LEAF GEOMETRY DESIGN
(FR) COLLIMATEUR MULTILAME DE CONCEPTION GÉOMÉTRIQUE DE LAME ALTERNÉE TRAPÉZOÏDALE
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Abstract
(EN)
A multileaf collimator includes a plurality of beam-blocking leaves of a first type and a plurality of beam-blocking leaves of a second type. The beam-blocking leaves of the first type are alternatingly arranged with the beam-blocking leaves of the second type side by side. Each of the beam-blocking leaves of the first type has a trapezoidal geometry viewed in the leaf longitudinal moving direction comprising a wider end and a narrower end with the wider end being proximal to a source. Each of the beam-blocking leaves of the second type has a trapezoidal geometry viewed in the leaf longitudinal moving direction comprising a wider end and a narrower end with the wider end being distal to the source.
(FR)
L'invention concerne un collimateur multilame comprenant une pluralité de lames de blocage de faisceau d'un premier type et une pluralité de lames de blocage de faisceau d'un second type. Les lames de blocage de faisceau du premier type sont disposées en alternance avec les lames de blocage de faisceau du second type côte à côte. Chacune des lames de blocage de faisceau du premier type est dotée d'une géométrie trapézoïdale vue dans la direction de déplacement longitudinal de lame comprenant une extrémité plus large et une extrémité plus étroite, l'extrémité plus large étant proximale à une source. Chacune des lames de blocage de faisceau du second type est dotée d'une géométrie trapézoïdale vue dans la direction de déplacement longitudinal de lame comprenant une extrémité plus large et une extrémité plus étroite avec l'extrémité plus large étant distale par rapport à la source.
Also published as
US20200206535
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