GB1437283A - Radiographic apparatus - Google Patents

Radiographic apparatus

Info

Publication number
GB1437283A
GB1437283A GB4502975A GB4502975A GB1437283A GB 1437283 A GB1437283 A GB 1437283A GB 4502975 A GB4502975 A GB 4502975A GB 4502975 A GB4502975 A GB 4502975A GB 1437283 A GB1437283 A GB 1437283A
Authority
GB
United Kingdom
Prior art keywords
cone
image
radiation
size
receptor
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
GB4502975A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories 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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB1437283A publication Critical patent/GB1437283A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/06—Diaphragms
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/20—Control of position or direction using feedback using a digital comparing device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/548—Remote control of the apparatus or devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Automation & Control Theory (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • X-Ray Techniques (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Radiation-Therapy Devices (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1437283 Automatic control MACHLETT LABORATORIES Inc 24 April 1974 [26 April 1973] 45029/75 Divided out of 1437282 Heading G3N [Also in Division H5] A radiographic apparatus comprises means for directing radiation through a shutter aperture on to an image receptor, means for adjusting the aperture and distance between source and receptor and an electro-mechanical sensing means providing an electrical output signal proportional to both the size of the shutter aperture and the distance, so that it represents the size of the field of radiation at the image receptor. As shown, a cone 30 of X-radiation generated in a tube 16 passes through a shutter, comprising longitudinally extending leaves 37 of lead which overlap to form a cone. The leaves are connected to a ring 38 which is adjusted, to set the aperture 36, by a motor 138. The ring may be manually adjusted by a knob 40. The cone of radiation passes through a patient 42 to an image receptor 46, such as an image intensifier tube. The tube 16 is carried on a cantilever arm, Fig. 1 (not shown), so that the source-to-image distance S.I.D. can be varied. Variation in S.I.D. is indicated by a coupled drum 106 carrying cams 108 which actuate switches 110 at selected S.I.D.'s to energize lamps 112. In order that the cross-section of the cone 30 is limited to that necessary to cover a screen 48 of the image receptor, a collimation monitoring unit, see Specification 1437282 Division G2-G3, is responsive to signals from a potentiometer 120, representative of S.I.D., a potentiometer 72, representative of image size, and a potentiometer 130, providing feedback from the drive to the cone-ring 38. A logic arrangement is provided whereby the final positioning movement, consequent on a change of S.I.D. or image screen, is such as to tend to keep the cone size at a minus tolerance. In an alternative arrangement, Fig. 7 (not shown), the axis of the cone of radiation is vertical and two motors are employed to adjust plates determining the long and short dimensions of a pyramidal beam of radiation directed towards a rectangular screen of an image receptor.
GB4502975A 1973-04-26 1974-04-24 Radiographic apparatus Expired GB1437283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354826A US3863073A (en) 1973-04-26 1973-04-26 Automatic system for precise collimation of radiation

Publications (1)

Publication Number Publication Date
GB1437283A true GB1437283A (en) 1976-05-26

Family

ID=23395056

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1794974A Expired GB1437282A (en) 1973-04-26 1974-04-24 Electromechanical control systems
GB4502975A Expired GB1437283A (en) 1973-04-26 1974-04-24 Radiographic apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1794974A Expired GB1437282A (en) 1973-04-26 1974-04-24 Electromechanical control systems

Country Status (5)

Country Link
US (1) US3863073A (en)
JP (1) JPS5440197B2 (en)
CA (1) CA1033854A (en)
DE (1) DE2420364B2 (en)
GB (2) GB1437282A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127173A (en) * 1982-09-13 1984-04-04 Varian Associates Thin fieldlight mirror for medical electron accelerators

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018716A (en) * 1975-06-16 1977-04-19 The Machlett Laboratories, Incorporated Radiographic system
DE2759073C3 (en) * 1977-12-30 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Electron tube
US4416022A (en) * 1982-03-29 1983-11-15 Litton Industrial Products, Inc. Prism light-line system
US4443888A (en) * 1982-03-29 1984-04-17 Litton Industrial Products, Inc. SID Monitor
JPH02238448A (en) * 1989-03-13 1990-09-20 Konica Corp Radiographic device
US7443949B2 (en) * 2001-10-19 2008-10-28 Hologic, Inc. Mammography system and method employing offset compression paddles, automatic collimation, and retractable anti-scatter grid
US7609806B2 (en) 2004-10-18 2009-10-27 Hologic Inc. Mammography system and method employing offset compression paddles, automatic collimations, and retractable anti-scatter grid
US7616801B2 (en) * 2002-11-27 2009-11-10 Hologic, Inc. Image handling and display in x-ray mammography and tomosynthesis
US7123684B2 (en) * 2002-11-27 2006-10-17 Hologic, Inc. Full field mammography with tissue exposure control, tomosynthesis, and dynamic field of view processing
US8571289B2 (en) 2002-11-27 2013-10-29 Hologic, Inc. System and method for generating a 2D image from a tomosynthesis data set
US8565372B2 (en) 2003-11-26 2013-10-22 Hologic, Inc System and method for low dose tomosynthesis
US10638994B2 (en) 2002-11-27 2020-05-05 Hologic, Inc. X-ray mammography with tomosynthesis
US7577282B2 (en) 2002-11-27 2009-08-18 Hologic, Inc. Image handling and display in X-ray mammography and tomosynthesis
US7662082B2 (en) 2004-11-05 2010-02-16 Theragenics Corporation Expandable brachytherapy device
US7702142B2 (en) 2004-11-15 2010-04-20 Hologic, Inc. Matching geometry generation and display of mammograms and tomosynthesis images
US7869563B2 (en) 2004-11-26 2011-01-11 Hologic, Inc. Integrated multi-mode mammography/tomosynthesis x-ray system and method
DE102005002559B4 (en) * 2005-01-19 2007-06-21 Siemens Ag X-ray device with error protection circuit
US7242749B2 (en) * 2005-11-15 2007-07-10 General Electric Company Methods and systems for dynamic pitch helical scanning
US7465268B2 (en) 2005-11-18 2008-12-16 Senorx, Inc. Methods for asymmetrical irradiation of a body cavity
EP1986548B1 (en) 2006-02-15 2013-01-02 Hologic, Inc. Breast biopsy and needle localization using tomosynthesis systems
US7630533B2 (en) 2007-09-20 2009-12-08 Hologic, Inc. Breast tomosynthesis with display of highlighted suspected calcifications
US7792245B2 (en) * 2008-06-24 2010-09-07 Hologic, Inc. Breast tomosynthesis system with shifting face shield
US7991106B2 (en) 2008-08-29 2011-08-02 Hologic, Inc. Multi-mode tomosynthesis/mammography gain calibration and image correction using gain map information from selected projection angles
US9248311B2 (en) 2009-02-11 2016-02-02 Hologic, Inc. System and method for modifying a flexibility of a brachythereapy catheter
US9579524B2 (en) 2009-02-11 2017-02-28 Hologic, Inc. Flexible multi-lumen brachytherapy device
US10207126B2 (en) 2009-05-11 2019-02-19 Cytyc Corporation Lumen visualization and identification system for multi-lumen balloon catheter
WO2011043838A1 (en) 2009-10-08 2011-04-14 Hologic, Inc . Needle breast biopsy system and method of use
US9352172B2 (en) 2010-09-30 2016-05-31 Hologic, Inc. Using a guide member to facilitate brachytherapy device swap
US8787522B2 (en) 2010-10-05 2014-07-22 Hologic, Inc Upright x-ray breast imaging with a CT mode, multiple tomosynthesis modes, and a mammography mode
WO2012071429A1 (en) 2010-11-26 2012-05-31 Hologic, Inc. User interface for medical image review workstation
US10342992B2 (en) 2011-01-06 2019-07-09 Hologic, Inc. Orienting a brachytherapy applicator
CA2829349C (en) 2011-03-08 2021-02-09 Hologic, Inc. System and method for dual energy and/or contrast enhanced breast imaging for screening, diagnosis and biopsy
EP2782505B1 (en) 2011-11-27 2020-04-22 Hologic, Inc. System and method for generating a 2d image using mammography and/or tomosynthesis image data
US9805507B2 (en) 2012-02-13 2017-10-31 Hologic, Inc System and method for navigating a tomosynthesis stack using synthesized image data
JP6392309B2 (en) 2013-03-15 2018-09-19 ホロジック インコーポレイティッド A system for navigating the tomosynthesis stack, including automatic focusing
WO2014151646A1 (en) 2013-03-15 2014-09-25 Hologic Inc. Tomosynthesis-guided biopsy in prone
CN105637562B (en) 2013-10-09 2019-04-09 霍罗吉克公司 Enhancing includes the X-ray breast tomography of the spatial resolution on the thickness direction of the breast of flattening
AU2014339982B2 (en) 2013-10-24 2019-04-18 Hologic, Inc. System and method for navigating x-ray guided breast biopsy
AU2015222981B2 (en) 2014-02-28 2019-01-31 Hologic, Inc. System and method for generating and displaying tomosynthesis image slabs
EP3445247B1 (en) 2016-04-22 2021-03-10 Hologic, Inc. Tomosynthesis with shifting focal spot x-ray system using an addressable array
CN106773513B (en) * 2016-12-30 2018-07-20 成都信息工程大学 The method of the ray automatic tracing imaging of digital radiography
CN106873302B (en) * 2016-12-30 2018-09-11 成都信息工程大学 A kind of method of detector longitudinal direction automatic tracing bulb focus radial imaging
CN110662489B (en) 2017-03-30 2024-08-02 豪洛捷公司 Systems and methods for targeted object enhancement to generate synthetic breast tissue images
CN110621231B (en) 2017-03-30 2024-02-23 豪洛捷公司 System and method for hierarchical multi-level feature image synthesis and representation
JP7169986B2 (en) 2017-03-30 2022-11-11 ホロジック， インコーポレイテッド Systems and methods for synthesizing low-dimensional image data from high-dimensional image data using object grid augmentation
US11403483B2 (en) 2017-06-20 2022-08-02 Hologic, Inc. Dynamic self-learning medical image method and system
DE202018006903U1 (en) 2017-08-16 2024-07-29 Hologic Inc. Techniques for patient motion artifact compensation in breast imaging
EP3449835B1 (en) 2017-08-22 2023-01-11 Hologic, Inc. Computed tomography system and method for imaging multiple anatomical targets
US11090017B2 (en) 2018-09-13 2021-08-17 Hologic, Inc. Generating synthesized projection images for 3D breast tomosynthesis or multi-mode x-ray breast imaging
EP3856033B1 (en) 2018-09-28 2023-06-07 Hologic, Inc. Method for synthetic breast tissue image generation by high density element suppression
EP3884499A1 (en) 2018-11-25 2021-09-29 Hologic, Inc. Multimodality hanging protocols
CN113574609A (en) 2019-03-29 2021-10-29 豪洛捷公司 Cut-triggered digital image report generation
EP3832689A3 (en) 2019-12-05 2021-08-11 Hologic, Inc. Systems and methods for improved x-ray tube life
US11471118B2 (en) 2020-03-27 2022-10-18 Hologic, Inc. System and method for tracking x-ray tube focal spot position
US11786191B2 (en) 2021-05-17 2023-10-17 Hologic, Inc. Contrast-enhanced tomosynthesis with a copper filter
US12186119B2 (en) 2021-10-05 2025-01-07 Hologic, Inc. Interactive model interface for image selection in medical imaging systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206604A (en) * 1962-11-13 1965-09-14 Gen Electric Adjustable x-ray field defining cone and field size indicating means
US3502878A (en) * 1967-09-22 1970-03-24 Us Health Education & Welfare Automatic x-ray apparatus for limiting the field size of a projected x-ray beam in response to film size and to source-to-film distance
US3581094A (en) * 1968-11-07 1971-05-25 Machlett Lab Inc X-ray apparatus
US3643095A (en) * 1969-11-28 1972-02-15 Picker Corp Automatic collimator control for x-ray apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127173A (en) * 1982-09-13 1984-04-04 Varian Associates Thin fieldlight mirror for medical electron accelerators

Also Published As

Publication number Publication date
DE2420364B2 (en) 1980-09-11
US3863073A (en) 1975-01-28
JPS5019384A (en) 1975-02-28
GB1437282A (en) 1976-05-26
CA1033854A (en) 1978-06-27
DE2420364A1 (en) 1974-11-07
JPS5440197B2 (en) 1979-12-01

Similar Documents

Publication Publication Date Title
GB1437283A (en) Radiographic apparatus
US2798958A (en) Apparatus for producing radiographs of selected structures within a subject
US5511106A (en) X-ray diagnostics installation for producing x-ray exposures of body parts of a patient
US4143273A (en) Variable collimator
US5299250A (en) Computer tomography apparatus with compensation for focus migration by adjustment of diaphragm position
EP0141448A1 (en) Slit-scanning radiography apparatus
GB1312039A (en) Devices for use in producing x-ray photographs
US5828720A (en) Exposure automatics for an X-ray apparatus
JPH0250736B2 (en)
US3643095A (en) Automatic collimator control for x-ray apparatus
EP0052995A1 (en) X-ray apparatus
US3244878A (en) Stereoscopic X-ray examination apparatus with light conductive rods to transmit the optical images
JPS58149741A (en) X-ray machinery
GB1532502A (en) Dental x-ray apparatus
US3912936A (en) X-ray image intensifier system
US4049967A (en) X-ray examining apparatus including a tomographic exposure installation
US4146794A (en) Tomometry system having provisions for selectively adjusting the format of a displayed picture
US4145613A (en) Motorized X-ray tube assembly
JPH0250735B2 (en)
US4442533A (en) Image plane indicator
JPS6117502B2 (en)
GB1517909A (en) Radiographic system
KR101734944B1 (en) X-ray Collimator Systems and Methods using Vertically Movable Aperture.
US4035650A (en) Dental X-ray diagnostic installation
US4815115A (en) Method of photographing an object with a panoramic X-ray apparatus fitted with automatic exposure

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930424