WO2003069634A2 - Verfahren und vorrichtung zum steuern einer nach dem rasterscanverfahren arbeitenden bestrahlungseinrichtung für schwere ionen oder protonen mit strahlextraktion - Google Patents
Verfahren und vorrichtung zum steuern einer nach dem rasterscanverfahren arbeitenden bestrahlungseinrichtung für schwere ionen oder protonen mit strahlextraktion Download PDFInfo
- Publication number
- WO2003069634A2 WO2003069634A2 PCT/EP2002/014256 EP0214256W WO03069634A2 WO 2003069634 A2 WO2003069634 A2 WO 2003069634A2 EP 0214256 W EP0214256 W EP 0214256W WO 03069634 A2 WO03069634 A2 WO 03069634A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extraction
- accelerator
- accelerator cycle
- cycle
- protons
- Prior art date
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Classifications
-
- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
-
- 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
- A61N5/1043—Scanning the radiation beam, e.g. spot scanning or raster scanning
-
- 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
- G21K1/08—Deviation, concentration or focusing of the beam by electric or magnetic means
-
- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N2005/1074—Details of the control system, e.g. user interfaces
-
- 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
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
Definitions
- the present invention relates to a method and a device for controlling a radiation device for heavy ions or protons with beam extraction which operates according to the raster scanning method, the beam energy, beam focusing and beam intensity being set for each accelerator cycle.
- the raster scanning method consists of a combination of transverse deflection of a focused particle beam in fast dipole magnets with variation of the beam energy in the accelerator to determine the particle range.
- the virtual segmentation of the treatment volume as part of an irradiation plan is illustrated in FIG. 3.
- a series of cuts of constant particle energy (isoenergy cuts IES) is created.
- the isoenergy cuts are in turn segmented into a grid of beam positions and particle coverage is optimized for each individual beam position.
- an accelerator cycle with the three adjustable parameters of beam energy, beam focusing and beam intensity is currently being defined.
- the cycle duration and thus the duration of the beam extraction is set to a fixed value.
- This procedure has disadvantages, because isoenergy cuts cannot necessarily be processed with an accelerator cycle, rather a beam extraction time that is up to a factor of 10 would be required.
- the acceleration and deceleration times associated with the use of several accelerator cycles, as well as the times required for preparing the accelerator result in an additional expenditure of time which is of the order of magnitude of the extraction time.
- conditioning cycles i.e. accelerator cycles without beam extraction, which are necessary to produce defined field conditions.
- the magnets of the accelerator and the beam guides must take place without irradiation being able to be carried out.
- the invention is based on the object of designing a control system for an irradiation device operating according to the raster scanning method in such a way that a high degree of utilization results with a reduced irradiation time.
- a method for controlling a radiation device for heavy ions or protons with beam extraction which operates according to the raster scanning method, is thus proposed, in which the beam energy, beam focusing and beam intensity are set for each accelerator cycle.
- the beam extraction is also defined for each accelerator cycle.
- the invention is therefore used in cyclically running accelerators.
- the duration of the beam extraction is advantageously set for each accelerator cycle. Due to the variable beam extraction time (fiattop time), the radiation dead times due to renewed accelerator cycle requirements can be greatly reduced, which results in considerable time savings and significantly higher patient throughputs.
- the method according to the invention is to be used in a DC (direct current) machine, for example in a cyclotron, the time structure of the beam (ON / OFF) and the necessary flexibility of the beam parameters (energy, intensity, focus) have to be produced in another way respectively.
- the beam extraction can be interrupted and resumed during an accelerator cycle.
- This variant is particularly suitable for irradiation of non-contiguous areas with constant radiation energy, possibly also constant beam focus and intensity.
- the above-mentioned measures for determining the beam extraction such as variable and interruptible beam extraction, changeable focus and intensity, result in highly flexible beam request mechanisms.
- the irradiation time can be reduced enormously.
- the measure, field regulation of the accelerator magnet supply and beam guidance can largely or completely dispense with the conditioning cycles mentioned at the outset, since the extracted treatment beam can be made available in a stable and precise manner.
- a device according to the invention for controlling an irradiation device for heavy ions with beam extraction operating according to the raster scanning method, in particular for carrying out the method according to the invention has a setting device for the beam extraction duration of each accelerator cycle. It preferably comprises a device for interrupting and resuming the extraction beam within half an accelerator cycle. According to a preferred exemplary embodiment of the invention, extraction and / or injection kickers, that is to say fast magnets, are provided for this purpose. Alternatively, a device for KO extraction of the extraction beam can also be provided.
- an adjusting device is provided for changing the focus and / or intensity of the extraction beam during an accelerator cycle.
- FIG. 1 is an illustration of an irradiation plan according to the invention, which contains non-contiguous areas that are to be irradiated with the same beam parameters,
- FIG 3 shows an illustration of a virtual segmentation of the treatment volume carried out as part of radiation planning with a series of isoenergy sections (IES).
- the radiation plans shown in FIGS. 1 and 2 show the synchroton dipole field in the upper part, time being plotted on the abscissa and energy on the ordinate.
- the lower diagram shows the intensity of the extraction beam, the intensity being plotted against the treatment time.
- FIG. 1 clearly shows the time saving that can be achieved by the invention.
- the particle impulses could be reduced by covering different areas with a beam extraction by beam interruption. In the present example, instead of three particle pulses, this results in a single particle pulse with fewer dead times.
- the representation of FIG. 1 is not an empirically obtained representation, but is based on the analysis of 46 radiation plans carried out in 2000. The reduction in the mean irradiation time resulted in a reduction from 251 to 87 seconds, practically a third of the time.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/502,860 US7091478B2 (en) | 2002-02-12 | 2002-12-13 | Method and device for controlling a beam extraction raster scan irradiation device for heavy ions or protons |
EP02806795A EP1474810A2 (de) | 2002-02-12 | 2002-12-13 | Verfahren und vorrichtung zum steuern einer nach dem rasterscanverfahren arbeitenden bestrahlungseinrichtung für schwere ionen oder protonen mit strahlextraktion |
JP2003568669A JP2005518069A (ja) | 2002-02-12 | 2002-12-13 | ラスタスキャン技術に従って動作する重イオンまたは陽子のビーム取出照射装置(beamextractionirradiationdevice)を制御する方法および装置 |
AU2002356655A AU2002356655A1 (en) | 2002-02-12 | 2002-12-13 | Method and device for controlling a beam extraction raster scan irradiation device for heavy ions or protons |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10205949A DE10205949B4 (de) | 2002-02-12 | 2002-02-12 | Verfahren und Vorrichtung zum Steuern einer nach dem Rasterscanverfahren arbeitenden Bestrahlungseinrichtung für schwere Ionen oder Protonen mit Strahlextraktion |
DE10205949.7 | 2002-02-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003069634A2 true WO2003069634A2 (de) | 2003-08-21 |
WO2003069634A3 WO2003069634A3 (de) | 2003-10-09 |
Family
ID=27674609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/014256 WO2003069634A2 (de) | 2002-02-12 | 2002-12-13 | Verfahren und vorrichtung zum steuern einer nach dem rasterscanverfahren arbeitenden bestrahlungseinrichtung für schwere ionen oder protonen mit strahlextraktion |
Country Status (6)
Country | Link |
---|---|
US (1) | US7091478B2 (de) |
EP (1) | EP1474810A2 (de) |
JP (1) | JP2005518069A (de) |
AU (1) | AU2002356655A1 (de) |
DE (1) | DE10205949B4 (de) |
WO (1) | WO2003069634A2 (de) |
Cited By (3)
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EP2384099A3 (de) * | 2010-04-30 | 2014-04-16 | Hitachi Ltd. | Geladene Teilchen-Strahlgenerator, System zur Bestrahlung geladenen Teilchen, Verfahren zum Betrieb des geladene Teilchen-Strahlgenerators und Verfahren zum Betrieb des Systems zur Bestrahlung geladenen Teilchen |
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EP1477206A1 (de) * | 2003-05-13 | 2004-11-17 | Hitachi, Ltd. | Einrichtung zur Bestrahlung mit Teilchenstrahlen und Bestrahlungsplanungseinheit |
US7102144B2 (en) | 2003-05-13 | 2006-09-05 | Hitachi, Ltd. | Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method |
US7122811B2 (en) | 2003-05-13 | 2006-10-17 | Hitachi, Ltd. | Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method |
US7227161B2 (en) | 2003-05-13 | 2007-06-05 | Hitachi, Ltd. | Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method |
US7425717B2 (en) | 2003-05-13 | 2008-09-16 | Hitachi, Ltd. | Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method |
US7560717B2 (en) | 2003-05-13 | 2009-07-14 | Hitachi, Ltd. | Particle beam irradiation apparatus, treatment planning unit, and particle beam irradiation method |
EP2374506A1 (de) * | 2010-04-07 | 2011-10-12 | Siemens Aktiengesellschaft | Partikeltherapieanlage und Verfahren zum Betreiben einer Partikeltherapieanlage |
US8637839B2 (en) | 2010-04-07 | 2014-01-28 | Siemens Aktiengesellschaft | Method for operating a particle therapy system |
EP2384099A3 (de) * | 2010-04-30 | 2014-04-16 | Hitachi Ltd. | Geladene Teilchen-Strahlgenerator, System zur Bestrahlung geladenen Teilchen, Verfahren zum Betrieb des geladene Teilchen-Strahlgenerators und Verfahren zum Betrieb des Systems zur Bestrahlung geladenen Teilchen |
US8742699B2 (en) | 2010-04-30 | 2014-06-03 | Hitachi, Ltd. | Charged particle beam generator, charged particle irradiation system, method for operating charged particle beam generator and method for operating charged particle irradiation system |
Also Published As
Publication number | Publication date |
---|---|
AU2002356655A1 (en) | 2003-09-04 |
DE10205949A1 (de) | 2003-09-11 |
EP1474810A2 (de) | 2004-11-10 |
US7091478B2 (en) | 2006-08-15 |
JP2005518069A (ja) | 2005-06-16 |
WO2003069634A3 (de) | 2003-10-09 |
US20050116175A1 (en) | 2005-06-02 |
AU2002356655A8 (en) | 2003-09-04 |
DE10205949B4 (de) | 2013-04-25 |
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