Method for checking beam steering in an ion beam therapy system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61N-005/00
G21G-005/00
H01J-037/08
G21K-005/10
출원번호
US-0913179
(2001-11-02)
우선권정보
DE-0007121 (1999-02-19)
국제출원번호
PCT/EP00/00822
(2000-02-02)
국제공개번호
WO00/48674
(2000-08-24)
발명자
/ 주소
Badura, Eugen
Eickhoff, Hartmut
Haberer, Thomas
Poppensieker, Klaus
출원인 / 주소
Gesellschaft fuer Schwerionenforschung mbH
대리인 / 주소
Frommer Lawrence & Haug LLP
인용정보
피인용 횟수 :
154인용 특허 :
5
초록▼
The invention relates to a method of checking the beam guidance of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system (6, 8), having vertical deflection means (13) and horizontal deflection means (14) for the vertical and horizontal deflection of a tr
The invention relates to a method of checking the beam guidance of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system (6, 8), having vertical deflection means (13) and horizontal deflection means (14) for the vertical and horizontal deflection of a treatment beam (11) perpendicular to its beam direction, with the result that the treatment beam (11) is deflected by the grid scanner device to an isocentre (10) of the irradiation site, and a specific area surrounding the isocentre (10) is scanned, wherein redundancy means are used for a redundant termination of extraction and their functionality is checked and checking of the ability of beam guidance dipoles in the beam guidance to connect and disconnect is carried out.
대표청구항▼
1. Method of checking the beam guidance of a heavy ion beam therapy system, wherein the heavy ion beam therapy system comprises at least one ion source (1) an accelerator device (2, 5) for the acceleration of the ions of the ion source (1) in the form of a treatment beam (11), a beam guidance s
1. Method of checking the beam guidance of a heavy ion beam therapy system, wherein the heavy ion beam therapy system comprises at least one ion source (1) an accelerator device (2, 5) for the acceleration of the ions of the ion source (1) in the form of a treatment beam (11), a beam guidance system (6, 8), to guide the treatment beam (11) from the accelerator device (2, 5) to at least one irradiation site for treatment of a patient, the beam guidance system (6, 8) comprising at least one beam guidance channel (6), and a grid scanner device, arranged in the beam guidance system (6, 8), having vertical deflection means (13) and horizontal deflection means (14) for the vertical and horizontal deflection of the treatment beam (11) perpendicular to its beam direction, with the result that the treatment beam (11) is deflected by the grid scanner device to an isocentre (10) of the irradiation site and a specific area surrounding the isocentre (10) is scanned, characterised in that the beam guidance is checked by using redundancy means for a redundant termination of extraction and their functionality is checked and checking of the ability of beam guidance dipoles in the beam guidance to connect and disconnect is carried out, wherein after unsuccessful termination request and establishment of an ion beam, a renewed termination request is requested via a separate redundant channel and for independence from a control of an acceleration device, a special cable connection to a last dipole of the beam guidance upstream from a treatment site is provided to a power supply unit, so that a connection of this dipole can be effected only from a therapy supervisory control room via a special signal, wherein a check of connections and terminals of the therapy supervisory control room to the last dipole of the beam guidance and to the redundant channel for an additional termination of extraction is carried out prior to each block of irradiation procedures. 2. Method according to claim 1, characterised in that a renewed termination request is effected on a redundant channel constructed similarly to the normal channel. 3. Method according to claim 1, characterised in that the redundant channel is in operative connection with a deflection dipole of the high-energy beam guidance. 4. Method according to claim 1, characterised in that an artificial interruption of an alarm line at a first termination of extraction initiates a renewed termination of extraction. 5. Method according to claim 1, characterised in that checking of the redundant channel for a renewed termination of extraction is effected prior to each block of irradiation procedures. 6. Device according to claim 1, characterised in that the response time for a next termination of extraction is set to less than 10 milliseconds. 7. Method according to claim 1, characterised in that the operation of the connection and disconnection of a last dipole of the beam guidance upstream from a treatment site is tested. 8. Method according to claim 1, characterised in that a check of the operation of a redundant termination of extraction and a connection and disconnection of a last deflection dipole is carried out prior to each block of irradiation procedures.
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