MX3052E - Mejoras a un aparato para examinar tejido biologico midiendo la absorcion de los rayos gama o de los rayos x - Google Patents

Mejoras a un aparato para examinar tejido biologico midiendo la absorcion de los rayos gama o de los rayos x

Info

Publication number
MX3052E
MX3052E MX100183U MX10018374U MX3052E MX 3052 E MX3052 E MX 3052E MX 100183 U MX100183 U MX 100183U MX 10018374 U MX10018374 U MX 10018374U MX 3052 E MX3052 E MX 3052E
Authority
MX
Mexico
Prior art keywords
detector
radiation
radiation source
range
output signal
Prior art date
Application number
MX100183U
Other languages
English (en)
Inventor
Erik Dissing
Original Assignee
Atomenregi Ab
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 Atomenregi Ab filed Critical Atomenregi Ab
Publication of MX3052E publication Critical patent/MX3052E/es

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
    • 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
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • 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
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

La presente invención se refiere a mejoras a un aparato para examinar tejido biológico midiendo la absorción de los Rayos Gama o de los Rayos X, el cual incluye al menos dos substancias diferentes del tipo que comprende una fuente de radiación radioactiva que emite haces de radiación gama o rayos X, un detector para detectar las radiaciones emitidas por la fuente de radiación; que el detector produce una señal de salida que depende de la intensidad de radiación que cae sobre el detector, mecanismos para sostener la fuente de radiación y al detector en forma tal que el haz es dirigido hacia el detector y que así la muestra puede ser colocada entre la fuente de radiación y el detector mientras es pasada por el haz de radiación; y mecanismos para procesar la señal de salida, caracterizadas en que la fuente de radiación emite fotones de al menos dos energías diferentes; que el detector produce impulsos de salida por cada fotón incidente que la amplitud de la pulsación es proporcional a la energía del fotón; que el mecanismo de procesamiento incluye un primer discriminador de impulsos conectados a la salida de el detector y que pasa impulsos correspondientes a una primera energía de fotón; y un primer medidor de proporción logarítmica conectando al primer discriminador de impulsos el cual produce una primera señal de salida proporcional al logaritmo de la frecuencia de impulsos de entrada al mismo.
MX100183U 1973-05-11 1974-05-10 Mejoras a un aparato para examinar tejido biologico midiendo la absorcion de los rayos gama o de los rayos x MX3052E (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7306721A SE373279B (sv) 1973-05-11 1973-05-11 Forfarande och anordning for undersokning av en del av en biologisk vevnad

Publications (1)

Publication Number Publication Date
MX3052E true MX3052E (es) 1980-03-05

Family

ID=20317447

Family Applications (1)

Application Number Title Priority Date Filing Date
MX100183U MX3052E (es) 1973-05-11 1974-05-10 Mejoras a un aparato para examinar tejido biologico midiendo la absorcion de los rayos gama o de los rayos x

Country Status (7)

Country Link
US (1) US3944830A (es)
JP (1) JPS5048993A (es)
CA (1) CA1006989A (es)
DE (1) DE2421649A1 (es)
GB (1) GB1446818A (es)
MX (1) MX3052E (es)
SE (1) SE373279B (es)

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US4947414A (en) * 1986-07-14 1990-08-07 Hologic, Inc. Bone densitometer
US5148455A (en) * 1986-07-14 1992-09-15 Hologic, Inc. Bone densitometer
USRE34511E (en) * 1987-05-15 1994-01-18 Hologic, Inc. Method of radiologically scanning the spine for measuring bone density
EP0358717B1 (en) * 1987-05-15 1997-04-16 MEDICAL & SCIENTIFIC ENTERPRISES, INC. Radiological apparatus for measuring bone density
US5572998A (en) * 1987-05-15 1996-11-12 Hologic, Inc. Method of scanning the spine of a patient to determine bone density along two different axes
US5165410A (en) 1987-05-15 1992-11-24 Medical & Scientific Enterprises, Inc. Position indicating system for a multidiagnostic scanner
US6230036B1 (en) 1987-05-15 2001-05-08 Hologic, Inc. System for radiologically scanning the spine for measuring bone density
US4986273A (en) * 1989-08-07 1991-01-22 Medical & Scientific Enterprises, Inc. Method of radiologically scanning the spine for measuring bone density
US4910757A (en) * 1987-11-06 1990-03-20 Hitachi, Ltd. Method and apparatus for X-ray imaging
JPH0170154U (es) * 1988-10-12 1989-05-10
US5005196A (en) * 1989-03-10 1991-04-02 Expert Image Systems, Inc. Limb positioning and calibration apparatus for radiographic imaging
US5090040A (en) * 1989-03-10 1992-02-18 Expert Image Systems, Inc. Data acquisition system for radiographic imaging
US5150394A (en) * 1989-12-05 1992-09-22 University Of Massachusetts Medical School Dual-energy system for quantitative radiographic imaging
US6031892A (en) * 1989-12-05 2000-02-29 University Of Massachusetts Medical Center System for quantitative radiographic imaging
US5319547A (en) * 1990-08-10 1994-06-07 Vivid Technologies, Inc. Device and method for inspection of baggage and other objects
US5687211A (en) * 1993-11-22 1997-11-11 Hologic, Inc. Bone densitometry scanning system and method for selecting scan parametric values using x-ray thickness measurement
US5838765A (en) * 1993-11-22 1998-11-17 Hologic, Inc. Whole-body x-ray bone densitometry using a narrow-angle fan beam, including variable fan beam displacement between scan passes
US6217214B1 (en) 1993-11-22 2001-04-17 Hologic, Inc. X-ray bone densitometry apparatus
US5748705A (en) * 1993-11-22 1998-05-05 Hologic Inc. X-ray bone densitometry
US6059455A (en) * 1993-11-22 2000-05-09 Hologic, Inc. Portable X-ray bone densitometry system
US5432834A (en) * 1993-11-22 1995-07-11 Hologic, Inc. Whole-body dual-energy bone densitometry using a narrow angle fan beam to cover the entire body in successive scans
US5715820A (en) * 1995-06-06 1998-02-10 Hologic, Inc. X-ray bone densitometry using multiple pass scanning with image blending
US5852647A (en) * 1997-09-24 1998-12-22 Schick Technologies Method and apparatus for measuring bone density
US6320931B1 (en) 1998-03-02 2001-11-20 Image Analysis, Inc. Automated x-ray bone densitometer
US6546075B1 (en) 1999-05-10 2003-04-08 Epsirad Inc. Energy sensitive detection systems
GB2382135A (en) * 2001-11-20 2003-05-21 Spectral Fusion Technologies L X-ray apparatus for grading meat samples according to a predetermined meat to fat ratio
US6990222B2 (en) * 2001-11-21 2006-01-24 Arnold Ben A Calibration of tissue densities in computerized tomography
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KR100832485B1 (ko) 2006-11-04 2008-05-26 박영웅 이중 방사선을 이용한 물질의 밀도, 성분, 조성 측정방법및 이를 이용한 장치
KR100982000B1 (ko) 2008-03-28 2010-09-13 주식회사 씨알테크놀러지 광자계수형 디지털 검출기를 이용한 골밀도 측정 장치 및그 방법
JP6399967B2 (ja) * 2014-09-17 2018-10-03 三菱電機株式会社 樹脂片の選別方法及び樹脂片の選別装置

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Also Published As

Publication number Publication date
SE373279B (sv) 1975-02-03
GB1446818A (en) 1976-08-18
US3944830A (en) 1976-03-16
JPS5048993A (es) 1975-05-01
DE2421649A1 (de) 1974-11-21
CA1006989A (en) 1977-03-15

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