Method of operating an ion beam therapy system with monitoring of beam position
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-0890895
(1700-01-01)
우선권정보
DE-0007205 (1999-02-19)
국제출원번호
PCT/EP00/00824
(2000-02-02)
발명자
/ 주소
Badura, Eugen
Eickhoff, Hartmut
Essel, Hans-Georg
Haberer, Thomas
Poppensiecker, Klaus
출원인 / 주소
Gesellschaft fuer Schwerionenforschung mbH
대리인 / 주소
Frommer Lawrence & Haug, LLP
인용정보
피인용 횟수 :
162인용 특허 :
4
초록▼
A method for the operation 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 it
A method for the operation 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 scans a specific area surrounding the isocentre (10). For monitoring the operational stability and operational safety of the therapy system, the beam position of the treatment beam (11) in the region of the isocentre (10) is monitored and evaluated, intervention in the ion beam therapy system being carried out if the evaluation of the beam position shows a departure, from a predetermined desired value, that exceeds a specific tolerance value based on a required half-value width of the beam profile. That tolerance value is especially ±25 % of the required half-value width.
대표청구항▼
A method for the operation 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 it
A method for the operation 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 scans a specific area surrounding the isocentre (10). For monitoring the operational stability and operational safety of the therapy system, the beam position of the treatment beam (11) in the region of the isocentre (10) is monitored and evaluated, intervention in the ion beam therapy system being carried out if the evaluation of the beam position shows a departure, from a predetermined desired value, that exceeds a specific tolerance value based on a required half-value width of the beam profile. That tolerance value is especially ±25 % of the required half-value width. , wherein each of said two or more portions and said lower member are sealingly connected to form air tight chambers therebetween, each of said chambers is in fluid communication with at least one of the other of said chambers, each of said chambers contains a fluid that separates said two or more portions from said lower member, said upper contact areas and said lower contact areas are separated by at least a portion of said chambers and a force applied to one of said chambers causes said fluid to flow from said one of said chambers to at least one of the other of said chambers causing said at least one of the other of said chambers to expand and allowing said upper contact area of said one of said chambers and said corresponding lower contact area to make contact and close the switch of said circuit. 12. The switch of claim 11, wherein each of said chambers is in fluid communication with at least one of the other of said chambers by a channel. 13. The switch of claim 11, wherein said fluid is air. 14. The switch of claim 11, wherein said lower member is flexible. 15. The switch of claim 12, wherein each of said two or more portions have a dome-like shape. 16. The switch of claim 12, wherein each of said upper contact areas are aligned across said chambers with said corresponding lower contact areas. 17. The switch of claim 16, wherein said upper contact areas are centrally located along said inner surface of said two or more portions and said corresponding lower contact areas are centrally located along said inner surface of said lower member. 18. The switch of claim 12, wherein each of said upper contact areas are partially embedded in said inner surface of said two or more portions and said lower contact areas are partially embedded in said inner surface of said lower member. 19. The switch of claim 12, wherein said two or more portions and said lower member are integrally formed. 20. An electrical switch for use with wearable electronics, comprising: a flexible upper member, said upper member having an outer surface suitable for providing comfort to a wearer when the switch is used with wearable electronics and an inner surface with an upper contact area that is electrically conductive and connected to a circuit; and a lower member, said lower member having an outer surface suitable for providing comfort to a wearer when the switch is used with wearable electronics and an inner surface with a lower contact area that is electrically conductive and connected to said circuit, wherein said upper member and said lower member are sealingly connected to form an impermeable chamber therebetween, said upper contact area and said lower contact area are separated by at least a portion of said chamber such that a force applied to said upper member causes at least said upper member to stretch outwardly in a lateral direction allowing said upper contact area and said lower contact area to make contact and close said circuit. and the movable contact is adapted for movement so as to selectively establish an electrical path between the center contact and one of the stationary contacts, by movement of the movable contact member about the fulcrum section. An actuator includes a spring biased plunger engaged with the movable contact member, for providing rocking movement of the movable contact member in response to movement of the actuator. The plunger includes a head portion which moves on the surfaces of the movable contact member for moving the movable contact member between ON and OFF positions. The movable contact member and the head portion of the plunger define a matching non-linear cross-sectional configuration, to positively locate the movable contact member in its OFF position, to provide consistent placement of the movable contacts relative to the stationary contacts.
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