ES474765A1 - Mejoras introducidas en un explorador de tomografia computa-da - Google Patents

Mejoras introducidas en un explorador de tomografia computa-da

Info

Publication number
ES474765A1
ES474765A1 ES474765A ES474765A ES474765A1 ES 474765 A1 ES474765 A1 ES 474765A1 ES 474765 A ES474765 A ES 474765A ES 474765 A ES474765 A ES 474765A ES 474765 A1 ES474765 A1 ES 474765A1
Authority
ES
Spain
Prior art keywords
scanning
reduced dose
detectors
precollimator
scanner
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
ES474765A
Other languages
English (en)
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.)
American Science and Engineering Inc
Original Assignee
American Science and Engineering 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 American Science and Engineering Inc filed Critical American Science and Engineering Inc
Publication of ES474765A1 publication Critical patent/ES474765A1/es
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
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • 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
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/34—Anode current, heater current or heater voltage of X-ray tube

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Optics & Photonics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

Mejoras introducidas en un explorador "CT" que tiene un conjunto de detectores contiguos y una fuente de un haz de abanico de energía radiante penetrante que puede desplazarse con relación a los detectores alrededor de un eje en una región que ha de ser explorada, estando dichas mejoras caracterizadas porque incluyen.: Un dispositivo para limitar la anchura de dicho haz de abanico en el sentido de la dirección de la exploración en las porciones extremas de dicha exploración de tal manera que el número de detectores iluminados cerca de cada punto extremo de la exploración sea proporcional a la distancia entre la fuente y cada punto extremo.
ES474765A 1977-11-03 1978-11-02 Mejoras introducidas en un explorador de tomografia computa-da Expired ES474765A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/848,144 US4200800A (en) 1977-11-03 1977-11-03 Reduced dose CT scanning

Publications (1)

Publication Number Publication Date
ES474765A1 true ES474765A1 (es) 1979-11-01

Family

ID=25302459

Family Applications (1)

Application Number Title Priority Date Filing Date
ES474765A Expired ES474765A1 (es) 1977-11-03 1978-11-02 Mejoras introducidas en un explorador de tomografia computa-da

Country Status (9)

Country Link
US (1) US4200800A (es)
JP (1) JPS5474694A (es)
BE (1) BE871679A (es)
DE (1) DE2846640A1 (es)
ES (1) ES474765A1 (es)
FR (1) FR2408197A1 (es)
IT (1) IT1100034B (es)
LU (1) LU80462A1 (es)
NL (1) NL7810911A (es)

Families Citing this family (36)

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Publication number Priority date Publication date Assignee Title
DE2912010C2 (de) * 1979-03-27 1987-04-16 Philips Patentverwaltung Gmbh, 2000 Hamburg Gerät zur Messung der Absorptionsverteilung
DE2928825A1 (de) * 1979-07-17 1981-02-12 Siemens Ag Schichtaufnahmegeraet zur herstellung von transversalschichtbildern
US4511801A (en) * 1982-07-19 1985-04-16 Bethlehem Steel Corporation Radiation scanning and measuring device
DE3875999T2 (de) * 1987-04-10 1993-03-25 British Aerospace Abbildungsanlage.
US5228070A (en) * 1988-10-20 1993-07-13 Picker International, Inc. Constant image quality CT scanner with variable radiation flux density
US7110493B1 (en) 2002-02-28 2006-09-19 Rapiscan Security Products (Usa), Inc. X-ray detector system having low Z material panel
US6665373B1 (en) 2002-03-12 2003-12-16 Rapiscan Security Products (Usa), Inc. X-ray imaging system with active detector
US8243876B2 (en) 2003-04-25 2012-08-14 Rapiscan Systems, Inc. X-ray scanners
US8223919B2 (en) 2003-04-25 2012-07-17 Rapiscan Systems, Inc. X-ray tomographic inspection systems for the identification of specific target items
GB0525593D0 (en) 2005-12-16 2006-01-25 Cxr Ltd X-ray tomography inspection systems
US7889835B2 (en) * 2003-08-07 2011-02-15 Morpho Detection, Inc. System and method for detecting an object by dynamically adjusting computational load
US7492855B2 (en) 2003-08-07 2009-02-17 General Electric Company System and method for detecting an object
US7609807B2 (en) * 2004-02-17 2009-10-27 General Electric Company CT-Guided system and method for analyzing regions of interest for contraband detection
US7031430B2 (en) * 2004-04-06 2006-04-18 General Electric Company System and method for detecting objects with differential operators
US7356174B2 (en) * 2004-05-07 2008-04-08 General Electric Company Contraband detection system and method using variance data
US8638904B2 (en) 2010-03-14 2014-01-28 Rapiscan Systems, Inc. Personnel screening system
US7796733B2 (en) * 2007-02-01 2010-09-14 Rapiscan Systems, Inc. Personnel security screening system with enhanced privacy
US8576982B2 (en) 2008-02-01 2013-11-05 Rapiscan Systems, Inc. Personnel screening system
US8995619B2 (en) 2010-03-14 2015-03-31 Rapiscan Systems, Inc. Personnel screening system
CN101779119B (zh) 2007-06-21 2012-08-29 瑞皮斯坎系统股份有限公司 用于提高受指引的人员筛查的系统和方法
US8003949B2 (en) 2007-11-01 2011-08-23 Rapiscan Systems, Inc. Multiple screen detection systems
EP2223090A4 (en) 2007-12-25 2016-11-09 Rapiscan Systems Inc ENHANCED SECURITY SYSTEM FOR SCREENING PEOPLE
JP2011019633A (ja) * 2009-07-14 2011-02-03 Toshiba Corp Ｘ線診断装置及び被曝線量低減用制御プログラム
EP2502056A4 (en) * 2009-11-18 2017-12-13 Rapiscan Systems, Inc. X-ray based system and methods for inspecting a person's shoes for aviation security threats
JP5844793B2 (ja) 2010-03-14 2016-01-20 ラピスカン システムズ、インコーポレイテッド 多重スクリーン検出システム
US8184775B1 (en) 2010-10-29 2012-05-22 General Electric Company Dynamic collimator for wide coverage and low dose cardiac CT imaging
US10670740B2 (en) 2012-02-14 2020-06-02 American Science And Engineering, Inc. Spectral discrimination using wavelength-shifting fiber-coupled scintillation detectors
US8798230B2 (en) * 2012-11-19 2014-08-05 Samsung Electronics Co., Ltd. Radiation imaging apparatus, computed tomography apparatus, and radiation imaging method
US11280898B2 (en) 2014-03-07 2022-03-22 Rapiscan Systems, Inc. Radar-based baggage and parcel inspection systems
MX361149B (es) 2014-03-07 2018-11-28 Rapiscan Systems Inc Detectores de banda ultra ancha.
JP2017537399A (ja) 2014-11-25 2017-12-14 ラピスカン システムズ、インコーポレイテッド インテリジェントセキュリティ管理システム
PL3271709T3 (pl) 2015-03-20 2023-02-20 Rapiscan Systems, Inc. Ręczny przenośny system kontroli rozpraszania wstecznego
WO2016196521A1 (en) * 2015-06-01 2016-12-08 The Regents Of The University Of California Systems and methods for reducing radiation dose in ct
GB2572700A (en) 2016-09-30 2019-10-09 American Science & Eng Inc X-Ray source for 2D scanning beam imaging
EP3811117A4 (en) 2018-06-20 2022-03-16 American Science & Engineering, Inc. SCINTILLATION DETECTORS COUPLED TO WAVELENGTH OFFSET SHEET
US11340361B1 (en) 2020-11-23 2022-05-24 American Science And Engineering, Inc. Wireless transmission detector panel for an X-ray scanner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1430088A (en) * 1972-05-17 1976-03-31 Emi Ltd Radiography
US3922552A (en) * 1974-02-15 1975-11-25 Robert S Ledley Diagnostic X-ray systems
GB1509528A (en) * 1974-06-07 1978-05-04 Emi Ltd Radiology
DE2442809A1 (de) * 1974-09-06 1976-03-18 Philips Patentverwaltung Anordnung zur ermittlung der absorption in einem koerper
US4045672A (en) * 1975-09-11 1977-08-30 Nihon Denshi Kabushiki Kaisha Apparatus for tomography comprising a pin hole for forming a microbeam of x-rays
DE2604020C3 (de) * 1976-02-03 1980-12-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zur Ermittlung der Absorption einer Strahlung in einer Ebene eines Körpers mit einer einen keilförmigen Strahlungsbereich ausblendenden Abblendvorrichtung
US4075489A (en) * 1977-01-21 1978-02-21 Simulation Physics Method and apparatus involving the generation of x-rays
JPS52106698A (en) * 1977-03-03 1977-09-07 Emi Ltd Radiation photograph

Also Published As

Publication number Publication date
DE2846640A1 (de) 1979-05-10
US4200800A (en) 1980-04-29
NL7810911A (nl) 1979-05-07
BE871679A (fr) 1979-04-30
IT7829363A0 (it) 1978-11-02
FR2408197A1 (fr) 1979-06-01
LU80462A1 (fr) 1980-05-07
JPS5474694A (en) 1979-06-14
IT1100034B (it) 1985-09-28

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