GB1196100A - Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices - Google Patents

Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices

Info

Publication number
GB1196100A
GB1196100A GB52587/68A GB5258768A GB1196100A GB 1196100 A GB1196100 A GB 1196100A GB 52587/68 A GB52587/68 A GB 52587/68A GB 5258768 A GB5258768 A GB 5258768A GB 1196100 A GB1196100 A GB 1196100A
Authority
GB
United Kingdom
Prior art keywords
jaws
shafts
jaw
shaft
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB52587/68A
Inventor
Larry Resnick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1196100A publication Critical patent/GB1196100A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiation-Therapy Devices (AREA)
  • Particle Accelerators (AREA)

Abstract

1,196,100. Beam defining diaphragm. VARIAN ASSOCIATES. 6 Nov., 1968 [24 Nov., 1967], No. 52587/68. Heading H5R. An apparatus for defining the width of a beam of radiation comprises a pair of metal jaws having opposed facing surfaces, at least one of the jaws being movable and pivotally connected to two non-parallel shafts by means permitting the jaw to slide along the shafts, the angle between the shafts being such that the facing surface of the jaw is maintained parallel to the edge of the beam defined by the jaw over a range of beam widths. The apparatus is illustrated by Fig. 2 wherein jaws 38 are both movable along skew shafts 58 and 28 on pivotable collars 68 and 40 respectively. A drive means e.g. sprockets 80, 82 and chains 78 may be fitted to move the jaws along the shafts which in the particular embodiment is accomplished by threading the ends of shaft 28 with threads 35 of opposite hand supporting the shaft on end bearings 32 and centre bearing 36 so as to rotate and attaching a pivoting bush 40 suitably threaded to each of the blocks 38 whereby rotation of the rod either separates or closes the jaws, the inclination of the jaws with respect to the beam being governed by the angle between the shafts 28 and 58 and the distance between the points of attachment of bushes 40 and 68 on the blocks 38. If desired each or the jaw may be connected at opposite sides to two pairs of non-parallel shafts when the two threaded shaft may be coupled, e.g. by sprocket and drive chain, so as to rotate synchronously. As is indicated in the drawing both jaws may be mounted for movement. Preferably as shown one shaft 28 serves two jaws and the other two support shafts 58 are skewed in opposite senses with respect to the single shaft. The arrangement of the facing surfaces may be defined if desired as being such that the facing surface of the or each movable jaw is coplanar with the emission point of the radiation beam.
GB52587/68A 1967-11-24 1968-11-06 Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices Expired GB1196100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68553367A 1967-11-24 1967-11-24

Publications (1)

Publication Number Publication Date
GB1196100A true GB1196100A (en) 1970-06-24

Family

ID=24752610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52587/68A Expired GB1196100A (en) 1967-11-24 1968-11-06 Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices

Country Status (4)

Country Link
US (1) US3539813A (en)
DE (1) DE1808501A1 (en)
FR (1) FR1593275A (en)
GB (1) GB1196100A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767931A (en) * 1972-11-14 1973-10-23 Varian Associates Adjustable x-ray beam collimator with shutter for illumination of the radiation pattern
SE417278B (en) * 1978-04-12 1981-03-09 Philips Svenska Ab MEDICAL RADIATION EQUIPMENT
FR2473776B1 (en) * 1980-01-11 1985-07-05 Cgr Mev IRRADIATION APPARATUS USING RADIOACTIVE SOURCES
US4343997A (en) * 1980-07-14 1982-08-10 Siemens Medical Laboratories, Inc. Collimator assembly for an electron accelerator
FR2500677A1 (en) * 1981-02-24 1982-08-27 Scanditronix Instr Wedge-shaped plates in neutron collimator - have inner edges always pointing towards neutron source in adjustment positions
GB2211710A (en) * 1987-10-28 1989-07-05 Philips Nv Multileaf collimator
EP0437650A1 (en) * 1990-01-15 1991-07-24 Siemens Aktiengesellschaft X-ray diagnostic apparatus
US5892238A (en) * 1997-05-02 1999-04-06 Bionix Development Corp. Radiation therapy shielding assembly
US6052436A (en) * 1997-07-16 2000-04-18 Bionix Development Corporation Radiation therapy device employing cam pin and cam groove guiding system for controlling movement of linear multi-leaf collimator leaves
FR2960642B1 (en) * 2010-05-28 2012-07-13 Snecma NON-DESTRUCTIVE CONTROL METHOD AND DEVICE FOR IMPLEMENTING THE METHOD

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088031A (en) * 1959-04-13 1963-04-30 Allis Chalmers Mfg Co Adjustable collimator
US3151245A (en) * 1961-11-21 1964-09-29 High Voltage Engineering Corp X-ray beam collimating apparatus

Also Published As

Publication number Publication date
FR1593275A (en) 1970-05-25
DE1808501A1 (en) 1969-08-14
US3539813A (en) 1970-11-10

Similar Documents

Publication Publication Date Title
GB1196100A (en) Beam Width Defining Structure for Linear Accelerator Radiotherapy Devices
US3772753A (en) Arrangement for aligning tubular sections for fabrication
US4204619A (en) Pivoted web guide for travelling strip
US4142625A (en) Holding conveyor system
US3294218A (en) Belt carrier
GB916760A (en) Improvements in or relating to tube feeding mechanism
SE8401753D0 (en) BACKGAUGE DEVICE
US2511194A (en) Automatic tracking control mechanism for conveyer belts
FR2357447A1 (en) DEVICE FOR CENTERING, STRAIGHTENING AND TURNING LOADS MOVED BY MOTORIZED CONVEYORS
GB1218545A (en) Improvements in or relating to paper-sheet conveying mechanisms
US4936437A (en) Board inverting apparatus
US3668961A (en) Portable band saw
GB1319608A (en) Web guiding and expanding apparatus
US3595459A (en) Guider for straightening traveling webs
GB1120829A (en) Rolling-mill roller table
ATE16992T1 (en) FOIL HAND ROLLER.
US3063697A (en) Pipe cutting apparatus
US3355006A (en) Article conveyor device
US6736256B2 (en) Apparatus and method for controlling a longitudinal shifting of an elongated piece along a predetermined length
US2632557A (en) Portable supporting device for conveyers
ES484355A1 (en) Method and device for stretching webs of reticulate material.
GB1055567A (en) Roll assembly with combined pinch and tension adjusting roll
FR2684574B1 (en) POUTRELLE DRESSER.
US2366390A (en) Belt-centering device
US3712350A (en) Limbing boom

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee
PLE Entries relating assignments, transmissions, licences in the register of patents