DE102011089235A1 - Contour collimator for radiation therapy for treatment of tumors, has iris diaphragms stacked on top of each other and formed from material absorbing X-ray radiation and with apertures forming contour - Google Patents
Contour collimator for radiation therapy for treatment of tumors, has iris diaphragms stacked on top of each other and formed from material absorbing X-ray radiation and with apertures forming contour Download PDFInfo
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- DE102011089235A1 DE102011089235A1 DE102011089235A DE102011089235A DE102011089235A1 DE 102011089235 A1 DE102011089235 A1 DE 102011089235A1 DE 102011089235 A DE102011089235 A DE 102011089235A DE 102011089235 A DE102011089235 A DE 102011089235A DE 102011089235 A1 DE102011089235 A1 DE 102011089235A1
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- Prior art keywords
- contour
- collimator
- radiation
- ray radiation
- iris diaphragms
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- 230000005855 radiation Effects 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title abstract description 6
- 206010028980 Neoplasm Diseases 0.000 title description 6
- 238000001959 radiotherapy Methods 0.000 title description 5
- 238000000034 method Methods 0.000 claims abstract description 9
- 210000000554 iris Anatomy 0.000 claims description 33
- 239000011358 absorbing material Substances 0.000 claims description 3
- 241000446313 Lamella Species 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract 1
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
- A61N5/1045—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT
-
- 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
- G21K1/046—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers varying the contour of the field, e.g. multileaf collimators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
- A61N2005/1094—Shielding, protecting against radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
- A61N2005/1095—Elements inserted into the radiation path within the system, e.g. filters or wedges
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Description
Die Erfindung betrifft einen Konturkollimator für die Strahlentherapie und eine zugehöriges Verfahren, wobei die Kontur durch Irisblenden gebildet wird. The invention relates to a contour collimator for radiotherapy and an associated method, wherein the contour is formed by irises.
Ein Konturkollimator wird in der Strahlentherapie zur Behandlung von Tumoren eingesetzt. In der Strahlentherapie wird ein Tumor mit energiereicher Strahlung, in der Regel mit einer hochenergetischen Röntgenstrahlung eines Linearbeschleunigers, bestrahlt. Der Konturkollimator wird dabei in den Strahlengang der Röntgenstrahlung eingebracht. Er weist eine strahlungsdurchlässige Öffnung auf, deren Kontur der Kontur des Tumors entsprechen soll. Dadurch wird sichergestellt, dass nur der Tumor mit den Röntgenstrahlen und nicht das angrenzende gesunde Körpergewebe bestrahlt wird. Durch geeignete Ausbildung des Konturkollimators lässt sich nahezu jede beliebige Kontur eines Tumors nachbilden. A contour collimator is used in radiotherapy for the treatment of tumors. In radiotherapy, a tumor is irradiated with high-energy radiation, usually with a high-energy X-ray radiation from a linear accelerator. The contour collimator is introduced into the beam path of the X-ray radiation. It has a radiation-permeable opening whose contour is to correspond to the contour of the tumor. This ensures that only the tumor is irradiated with X-rays and not the adjacent healthy body tissue. By suitable design of the contour collimator, almost any desired contour of a tumor can be imitated.
Weit verbreitete Kollimatoren für die Strahlentherapie sind die sogenannten Lamellenkollimatoren, wie beispielsweise in der Patentschrift
Jede dieser Lamellen ist einzeln mittels eines Elektromotors verschiebbar. Da es bei der Positionierung der Lamellen leichte Abweichungen zwischen einer Sollvorgabe und der tatsächlich eingestellten Ist-Position der Lamellen geben kann, weist jede Lamelle ein Positionsmessmittel auf, mit dem die tatsächlich eingestellte Position genau bestimmt werden kann. Each of these blades is individually displaceable by means of an electric motor. Since there may be slight deviations between a desired setting and the actually set actual position of the slats in the positioning of the slats, each slat on a position measuring means, with which the actual set position can be determined accurately.
Es ist Aufgabe der Erfindung, einen weiteren Konturkollimator anzugeben, der eine Alternative zu einem Lamellenkollimaotor darstellt und einfach und rasch eine gewünschte Kontur nachbilden kann. Eine weitere Aufgabe der Erfindung besteht darin, ein Verfahren zur Bildung der Kontur anzugeben. It is an object of the invention to provide a further contour collimator, which is an alternative to a lamella collimator and can easily and quickly emulate a desired contour. Another object of the invention is to provide a method for forming the contour.
Gemäß der Erfindung wird die gestellte Aufgabe mit dem Konturkollimator und dem Verfahren zur Bildung einer Kontur der unabhängigen Patentansprüche gelöst. According to the invention, the stated object is achieved with the contour collimator and the method for forming a contour of the independent claims.
Der Kern der Erfindung besteht darin, mit Hilfe von übereinanderliegenden Irisblenden die Kontur zu bilden. Die Irisblende, auch als Kreisblende bezeichnet, ist eine Blende mit variabler Öffnungsweite. Die Öffnung kann in einer Art und Weise variiert werden, dass sie unabhängig von der Größe immer nahezu kreisförmig ist und der Mittelpunkt konstant bleibt. Die Irisblende besteht aus mehreren kreisförmig angeordneten Lamellen, die über eine Verstellmechanik gemeinsam nach innen oder nach außen gedreht werden können. Jede Lamelle ist auf einer Achse gelagert. Alle Lamellen sind in der Regel mit einem Ring über jeweils eine weitere Achse verbunden, damit sie sich gemeinsam bewegen. Je mehr Lamellen eingesetzt werden, desto besser bleibt die Öffnung bei der Verstellung an die Kreisform angenähert. Die Öffnung wird auch als Apertur bezeichnet. Apertur meint eine freie Öffnung oder deren Durchmesser, durch welche Röntgenstrahlen ausgesendet oder empfangen werden können. The essence of the invention is to form the contour with the help of superimposed iris diaphragms. The iris diaphragm, also referred to as a circular diaphragm, is a diaphragm with variable opening width. The aperture can be varied in such a way that, regardless of size, it is always nearly circular and the center remains constant. The iris diaphragm consists of several lamellae arranged in a circle, which can be rotated inwards or outwards together by means of an adjustment mechanism. Each lamella is mounted on an axle. All slats are usually connected to a ring via a further axis, so they move together. The more slats are used, the better the opening remains approximated to the circular shape during the adjustment. The opening is also referred to as an aperture. Aperture means a free opening or its diameter through which X-rays can be emitted or received.
Die Erfindung beansprucht einen Konturkollimator zur Einstellung einer Kontur eines Strahlengangs einer Röntgenstrahlung. Der Konturkollimator umfasst mehrere übereinander gestapelte Irisblenden, die aus einem die Röntgenstrahlung absorbierenden Material gebildet sind und deren Aperturen die Kontur bilden. Die Erfindung bietet den Vorteil, dass Konturen mit großer Genauigkeit und schnell nachgebildet werden können. Im Gegensatz zu Lamellenkollimatoren wird für die Verstellung der Irisblenden für gewöhnlich nur ein Motor gebraucht. The invention claims a contour collimator for setting a contour of a beam path of X-radiation. The contour collimator comprises a plurality of stacked iris diaphragms, which are formed from a material that absorbs the x-ray radiation and whose apertures form the contour. The invention has the advantage that contours can be reproduced with great accuracy and fast. In contrast to lamellar collimators, usually only one motor is needed for the adjustment of the iris diaphragms.
In einer Weiterbildung können die Aperturen der Irisblenden gleich groß sein und deckungsgleich übereinander liegen. In a further development, the apertures of the iris diaphragms can be the same size and lie congruently one above the other.
In einer weiteren Ausführungsform kann der Konturkollimator eine Verstellmechanik aufweisen, die die Irisblenden gleichzeitig verstellt. Die Verstellmechanik kann die Irisblenden verstellende Achsen umfassen. In a further embodiment, the contour collimator can have an adjustment mechanism which simultaneously adjusts the iris diaphragms. The adjustment mechanism may include the iris adjusting axes.
Des Weiteren kann die Irisblende kreisförmig angeordnete sichelförmige Lamellen umfassen. Furthermore, the iris diaphragm may comprise circular crescent-shaped lamellae.
Außerdem kann der Konturkollimator ein zylinderförmiges Gehäuse umfassen, in dem die Irisblenden und die Verstellmechanik angeordnet sind. In addition, the contour collimator may comprise a cylindrical housing in which the irises and the adjustment mechanism are arranged.
Die Erfindung beansprucht auch ein Verfahren zur Einstellung einer Kontur eines Strahlengangs einer Röntgenstrahlung mit einem Konturkollimator, wobei die Kontur durch gestapelte Irisblenden aus einem Röntgenstrahlung absorbierenden Material gebildet wird. The invention also claims a method for adjusting a contour of a beam path of X-ray radiation with a contour collimator, wherein the contour is formed by stacked iris diaphragms of an X-ray absorbing material.
In einer Weiterbildung des Verfahrens kann durch sichelförmige Lamellen eine die Kontur bildende Apertur erzeugt werden. In a development of the method, an aperture forming the contour can be generated by sickle-shaped lamellae.
In einer weiteren Ausführungsform können die Aperturen der Irisblenden deckungsgleich übereinander gestapelt werden. In a further embodiment, the apertures of the irises can be stacked congruently one above the other.
Weitere Besonderheiten und Vorteile der Erfindung werden aus den nachfolgenden Erläuterungen mehrerer Ausführungsbeispiele anhand von schematischen Zeichnungen ersichtlich. Other features and advantages of the invention will become apparent from the following explanations of several embodiments with reference to schematic drawings.
Es zeigen: Show it:
Zur Vermeidung von Streustrahlung werden wie in
Ein Röntgenstrahlenfilter für Röntgenbildaufnahmegeräte mit einem ähnlichen Aufbau, nämlich mit einer Irisblende, ist ebenfalls möglich. An X-ray filter for X-ray image recording devices with a similar structure, namely with an iris diaphragm, is also possible.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Konturcontour
- 22
- Irisblendeiris
- 33
- Achseaxis
- 44
- Gehäusecasing
- 55
- Lamellelamella
- 66
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Schlitz in der Lamelle
5 Slit in theslat 5 - 99
-
Apertur der Irisblende
2 /Röntgenstrahlung durchlässige ÖffnungAperture of theiris diaphragm 2 / X-ray permeable opening - 1010
- RöntgenstrahlungX-rays
- 1111
- Objektobject
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102006039793 B3 [0003] DE 102006039793 B3 [0003]
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011089235A DE102011089235A1 (en) | 2011-12-20 | 2011-12-20 | Contour collimator for radiation therapy for treatment of tumors, has iris diaphragms stacked on top of each other and formed from material absorbing X-ray radiation and with apertures forming contour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011089235A DE102011089235A1 (en) | 2011-12-20 | 2011-12-20 | Contour collimator for radiation therapy for treatment of tumors, has iris diaphragms stacked on top of each other and formed from material absorbing X-ray radiation and with apertures forming contour |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102011089235A1 true DE102011089235A1 (en) | 2012-08-09 |
Family
ID=46547119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102011089235A Ceased DE102011089235A1 (en) | 2011-12-20 | 2011-12-20 | Contour collimator for radiation therapy for treatment of tumors, has iris diaphragms stacked on top of each other and formed from material absorbing X-ray radiation and with apertures forming contour |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102011089235A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103750855A (en) * | 2014-01-21 | 2014-04-30 | 中国科学院高能物理研究所 | A new special CT device for mammary gland |
| CN104485151B (en) * | 2014-11-24 | 2017-12-15 | 西北核技术研究所 | A kind of circular port gamma collimater of aperture continuously adjustabe |
| US9962560B2 (en) * | 2013-12-20 | 2018-05-08 | Mevion Medical Systems, Inc. | Collimator and energy degrader |
| US10646728B2 (en) | 2015-11-10 | 2020-05-12 | Mevion Medical Systems, Inc. | Adaptive aperture |
| US10653892B2 (en) | 2017-06-30 | 2020-05-19 | Mevion Medical Systems, Inc. | Configurable collimator controlled using linear motors |
| US10675487B2 (en) | 2013-12-20 | 2020-06-09 | Mevion Medical Systems, Inc. | Energy degrader enabling high-speed energy switching |
| US10925147B2 (en) | 2016-07-08 | 2021-02-16 | Mevion Medical Systems, Inc. | Treatment planning |
| US11103730B2 (en) | 2017-02-23 | 2021-08-31 | Mevion Medical Systems, Inc. | Automated treatment in particle therapy |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2053089A1 (en) * | 1970-10-29 | 1972-05-04 | Siemens Ag | X-ray diaphragm |
| US4450578A (en) * | 1982-03-03 | 1984-05-22 | The United States Of America As Represented By The United States Department Of Energy | Variable aperture collimator for high energy radiation |
| DE4041296A1 (en) * | 1990-02-16 | 1991-08-22 | Siemens Ag | PRIMARY RADIATION |
| US5991362A (en) * | 1996-11-15 | 1999-11-23 | Xre Corporation | Adjustable opening X-ray mask |
| EP0757839B1 (en) * | 1995-02-27 | 1999-12-22 | Koninklijke Philips Electronics N.V. | X-ray examination apparatus comprising a collimator unit |
| US6148062A (en) * | 1997-11-03 | 2000-11-14 | Ge Medical Systems, S.A. | X-ray beam-shaping filter and X-ray imaging machine incorporating such a filter |
| DE20118951U1 (en) * | 2001-11-20 | 2002-07-04 | GFM Gesellschaft für Medizintechnik mbH, 64331 Weiterstadt | Aperture diaphragm for radiation therapy |
| EP1720173A1 (en) * | 2005-05-06 | 2006-11-08 | Deutsches Krebsforschungszentrum Stiftung des öffentlichen Rechts | Collimator for collimating a beam of high energy rays |
| DE102006039793B3 (en) | 2006-08-24 | 2008-01-24 | Siemens Ag | Motor-controlled parallel plate collimator for x-ray apparatus, has position measurement potentiometer fitted to each plate |
-
2011
- 2011-12-20 DE DE102011089235A patent/DE102011089235A1/en not_active Ceased
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2053089A1 (en) * | 1970-10-29 | 1972-05-04 | Siemens Ag | X-ray diaphragm |
| US4450578A (en) * | 1982-03-03 | 1984-05-22 | The United States Of America As Represented By The United States Department Of Energy | Variable aperture collimator for high energy radiation |
| DE4041296A1 (en) * | 1990-02-16 | 1991-08-22 | Siemens Ag | PRIMARY RADIATION |
| EP0757839B1 (en) * | 1995-02-27 | 1999-12-22 | Koninklijke Philips Electronics N.V. | X-ray examination apparatus comprising a collimator unit |
| US5991362A (en) * | 1996-11-15 | 1999-11-23 | Xre Corporation | Adjustable opening X-ray mask |
| US6148062A (en) * | 1997-11-03 | 2000-11-14 | Ge Medical Systems, S.A. | X-ray beam-shaping filter and X-ray imaging machine incorporating such a filter |
| DE20118951U1 (en) * | 2001-11-20 | 2002-07-04 | GFM Gesellschaft für Medizintechnik mbH, 64331 Weiterstadt | Aperture diaphragm for radiation therapy |
| EP1720173A1 (en) * | 2005-05-06 | 2006-11-08 | Deutsches Krebsforschungszentrum Stiftung des öffentlichen Rechts | Collimator for collimating a beam of high energy rays |
| DE102006039793B3 (en) | 2006-08-24 | 2008-01-24 | Siemens Ag | Motor-controlled parallel plate collimator for x-ray apparatus, has position measurement potentiometer fitted to each plate |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10675487B2 (en) | 2013-12-20 | 2020-06-09 | Mevion Medical Systems, Inc. | Energy degrader enabling high-speed energy switching |
| US9962560B2 (en) * | 2013-12-20 | 2018-05-08 | Mevion Medical Systems, Inc. | Collimator and energy degrader |
| CN103750855B (en) * | 2014-01-21 | 2016-03-16 | 中国科学院高能物理研究所 | Novel special CT of mammary gland device |
| CN103750855A (en) * | 2014-01-21 | 2014-04-30 | 中国科学院高能物理研究所 | A new special CT device for mammary gland |
| CN104485151B (en) * | 2014-11-24 | 2017-12-15 | 西北核技术研究所 | A kind of circular port gamma collimater of aperture continuously adjustabe |
| US10646728B2 (en) | 2015-11-10 | 2020-05-12 | Mevion Medical Systems, Inc. | Adaptive aperture |
| US10786689B2 (en) | 2015-11-10 | 2020-09-29 | Mevion Medical Systems, Inc. | Adaptive aperture |
| US11213697B2 (en) | 2015-11-10 | 2022-01-04 | Mevion Medical Systems, Inc. | Adaptive aperture |
| US11786754B2 (en) | 2015-11-10 | 2023-10-17 | Mevion Medical Systems, Inc. | Adaptive aperture |
| US10925147B2 (en) | 2016-07-08 | 2021-02-16 | Mevion Medical Systems, Inc. | Treatment planning |
| US12150235B2 (en) | 2016-07-08 | 2024-11-19 | Mevion Medical Systems, Inc. | Treatment planning |
| US11103730B2 (en) | 2017-02-23 | 2021-08-31 | Mevion Medical Systems, Inc. | Automated treatment in particle therapy |
| US10653892B2 (en) | 2017-06-30 | 2020-05-19 | Mevion Medical Systems, Inc. | Configurable collimator controlled using linear motors |
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