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
Links
- 238000010521 absorption reaction Methods 0.000 title 1
- 230000005855 radiation Effects 0.000 abstract 5
- 238000005259 measurement Methods 0.000 abstract 4
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
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4275—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 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
-
- 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4007—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 or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4291—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 or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating thereof
- A61B6/582—Calibration
- A61B6/583—Calibration using calibration phantoms
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiology & Medical Imaging (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
- Nuclear Medicine (AREA)
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.
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)
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 |
DE3469666D1 (en) * | 1983-04-25 | 1988-04-07 | Toshiba Kk | 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 (de) * | 1986-08-11 | 1987-12-10 | Siemens AG, 1000 Berlin und 8000 München | Röntgendetektorsystem |
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)
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 |
-
1978
- 1978-05-13 DE DE19782821083 patent/DE2821083A1/de not_active Ceased
-
1979
- 1979-05-08 NL NL7903578A patent/NL7903578A/xx unknown
- 1979-05-09 US US06/037,266 patent/US4286156A/en not_active Expired - Lifetime
- 1979-05-10 SE SE7904093A patent/SE431802B/sv unknown
- 1979-05-10 CA CA000327312A patent/CA1121919A/en not_active Expired
- 1979-05-10 GB GB7916171A patent/GB2021896B/en not_active Expired
- 1979-05-10 IT IT7922544A patent/IT1115204B/it active
- 1979-05-10 JP JP5758279A patent/JPS54152491A/ja active Granted
- 1979-05-11 ES ES480472A patent/ES480472A1/es not_active Expired
- 1979-05-11 FR FR7912057A patent/FR2425649A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2425649B1 (es) | 1983-07-08 |
NL7903578A (nl) | 1979-11-15 |
US4286156A (en) | 1981-08-25 |
DE2821083A1 (de) | 1979-11-22 |
JPS54152491A (en) | 1979-11-30 |
IT7922544A0 (it) | 1979-05-10 |
GB2021896B (en) | 1982-12-08 |
IT1115204B (it) | 1986-02-03 |
CA1121919A (en) | 1982-04-13 |
SE7904093L (sv) | 1979-11-14 |
GB2021896A (en) | 1979-12-05 |
JPS6347456B2 (es) | 1988-09-22 |
SE431802B (sv) | 1984-02-27 |
FR2425649A1 (fr) | 1979-12-07 |
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