ES480472A1 - Un dispositivo para determinar la distribucion de absorcion espacial en un objeto. - Google Patents

Un dispositivo para determinar la distribucion de absorcion espacial en un objeto.

Info

Publication number
ES480472A1
ES480472A1 ES480472A ES480472A ES480472A1 ES 480472 A1 ES480472 A1 ES 480472A1 ES 480472 A ES480472 A ES 480472A ES 480472 A ES480472 A ES 480472A ES 480472 A1 ES480472 A1 ES 480472A1
Authority
ES
Spain
Prior art keywords
examination
plane
determining
radiation
during
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
ES480472A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES480472A1 publication Critical patent/ES480472A1/es
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4275—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis using a detector unit almost surrounding the patient, e.g. more than 180°
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • A61B6/032—Transmission computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/06—Diaphragms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4007—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis characterised by using a plurality of source units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4291—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis the detector being combined with a grid or grating
    • 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
    • G21K1/025—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms

Abstract

Un dispositivo para determinar la distribución de absorción espacial en un objeto, que comprende una pluralidad de fuentes de radiación que están dispuestas en un plano de exámen y que irradian el plano de exámen desde direcciones diferentes, y que comprende también una gran pluralidad de detectores que están dispuestos sobre un arco de circulo en el plano de exámen y que sirven para medir la intensidad de la radiación al otro lado del objeto, siendo alcanzada al menos una parte de dichos detectores por radiación desde direcciones diferentes, caracterizado porque con el fin de producir una primera señal los detectores comprenden una primera zona que está protegida contra la radiación que pasa según líneas rectas entre fuente y detector y, con el fin de producir una segunda señal, comprenden una segunda zona adyacente en una dirección transversal al plano de exámen con el fin de detectar radiación que pasa según líneas rectas entre fuente y detector, siendo utilizables ambas señales para laformación de una señal diferencial.
ES480472A 1978-05-13 1979-05-11 Un dispositivo para determinar la distribucion de absorcion espacial en un objeto. Expired ES480472A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821083 DE2821083A1 (de) 1978-05-13 1978-05-13 Anordnung zur ermittlung der raeumlichen absorptionsverteilung in einem ebenen untersuchungsbereich

Publications (1)

Publication Number Publication Date
ES480472A1 true ES480472A1 (es) 1979-12-01

Family

ID=6039337

Family Applications (1)

Application Number Title Priority Date Filing Date
ES480472A Expired ES480472A1 (es) 1978-05-13 1979-05-11 Un dispositivo para determinar la distribucion de absorcion espacial en un objeto.

Country Status (10)

Country Link
US (1) US4286156A (es)
JP (1) JPS54152491A (es)
CA (1) CA1121919A (es)
DE (1) DE2821083A1 (es)
ES (1) ES480472A1 (es)
FR (1) FR2425649A1 (es)
GB (1) GB2021896B (es)
IT (1) IT1115204B (es)
NL (1) NL7903578A (es)
SE (1) SE431802B (es)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850675C2 (de) * 1978-11-22 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Schichtgerät zur Herstellung von Transversalschichtbildern
DE2920051C2 (de) * 1979-05-18 1984-04-19 Philips Patentverwaltung Gmbh, 2000 Hamburg Röntgengerät zur Ermittlung der Absorptionsverteilung in einem ebenen Untersuchungsbereich
DE2939146A1 (de) * 1979-09-27 1981-04-16 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur untersuchung eines koerpers mit durchdringender strahlung
US4549307A (en) * 1982-09-07 1985-10-22 The Board Of Trustees Of The Leland Stanford, Junior University X-Ray imaging system having radiation scatter compensation and method
EP0105618B1 (en) * 1982-09-07 1989-10-25 The Board Of Trustees Of The Leland Stanford Junior University X-ray imaging system having radiation scatter compensation and method
JPS59196447A (ja) * 1983-04-22 1984-11-07 Yokogawa Hokushin Electric Corp 放射線検出器
EP0123276B1 (en) * 1983-04-25 1988-03-02 Kabushiki Kaisha Toshiba X-ray diagnostic apparatus
JPS60108039A (ja) * 1983-11-18 1985-06-13 株式会社東芝 Ｘ線ｃｔ装置
JPS60210087A (ja) * 1984-04-03 1985-10-22 Toshiba Corp Ｘ線診断装置
JPS61249452A (ja) * 1985-04-30 1986-11-06 株式会社東芝 Ｘ線診断装置
JPH0675570B2 (ja) * 1985-09-11 1994-09-28 株式会社東芝 Ｘ線ｃｔ装置
JPS62191972A (ja) * 1986-02-18 1987-08-22 Toshiba Corp Ｘ線画像処理装置
JPH0763464B2 (ja) * 1986-05-07 1995-07-12 株式会社東芝 Ｘ線ｃｔ装置
US4881251A (en) * 1986-07-31 1989-11-14 Kabushiki Kaisha Toshiba Computed tomograph apparatus
DE8621546U1 (es) * 1986-08-11 1987-12-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
US4910759A (en) * 1988-05-03 1990-03-20 University Of Delaware Xray lens and collimator
JPH0668154U (ja) * 1993-02-25 1994-09-22 株式会社三協精機製作所 磁気ディスク駆動装置
DE19523090C1 (de) * 1995-06-26 1996-08-29 Siemens Ag Röntgenuntersuchungsgerät
DE10047720A1 (de) * 2000-09-27 2002-04-11 Philips Corp Intellectual Pty Vorrichtung und Verfahren zur Erzeugung eines Röntgen-Computertomogramms mit einer Streustrahlungskorrektur
US6770886B1 (en) 2000-10-10 2004-08-03 Therma-Wave, Inc. Detector-shield assembly for X-ray reflectometric system
JP3999179B2 (ja) * 2003-09-09 2007-10-31 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 放射線断層撮影装置
JP4933928B2 (ja) * 2007-03-22 2012-05-16 Ｎｔｎ株式会社 振動式部品供給装置
US8416415B2 (en) * 2009-04-27 2013-04-09 General Electric Company Gas turbine optical imaging system
FR2966716B1 (fr) 2010-10-29 2012-12-21 Gen Electric Methode d'estimation et de correction de la diffusion en mammographie.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585387A (en) * 1968-08-01 1971-06-15 Roland C Bramlet Radiation detection and imaging machine
US4052618A (en) * 1974-05-07 1977-10-04 E M I Limited Apparatus for examining a body by radiation such as x or gamma radiation
US3840747A (en) * 1973-04-09 1974-10-08 A Macovski Gamma ray imaging system
DE2442809A1 (de) * 1974-09-06 1976-03-18 Philips Patentverwaltung Anordnung zur ermittlung der absorption in einem koerper
GB1571800A (en) * 1976-01-15 1980-07-16 Emi Ltd Radiography
US4132895A (en) * 1976-08-28 1979-01-02 Emi Limited Radiography
DE2642846A1 (de) * 1976-09-23 1978-03-30 Siemens Ag Roentgenschichtgeraet zur herstellung von transversalschichtbildern
DE2650237C2 (de) * 1976-11-02 1985-05-02 Siemens AG, 1000 Berlin und 8000 München Röntgendiagnostikgerät zur Herstellung von Transversalschichtbildern
US4143273A (en) * 1977-04-11 1979-03-06 Ohio-Nuclear, Inc. Variable collimator

Also Published As

Publication number Publication date
JPS6347456B2 (es) 1988-09-22
SE431802B (sv) 1984-02-27
DE2821083A1 (de) 1979-11-22
FR2425649B1 (es) 1983-07-08
FR2425649A1 (fr) 1979-12-07
SE7904093L (sv) 1979-11-14
NL7903578A (nl) 1979-11-15
GB2021896B (en) 1982-12-08
CA1121919A (en) 1982-04-13
US4286156A (en) 1981-08-25
IT1115204B (it) 1986-02-03
IT7922544A0 (it) 1979-05-10
GB2021896A (en) 1979-12-05
JPS54152491A (en) 1979-11-30

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