IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0913109
(2001-11-20)
|
우선권정보 |
DE-0007065 (1999-02-19) |
국제출원번호 |
PCT/EP00/00858
(2000-02-03)
|
국제공개번호 |
WO00/48677
(2000-08-24)
|
발명자
/ 주소 |
- Hartmann, Gunther
- Heeg, Peter
- Jaekel, Oliver
- Karger, Christian
|
출원인 / 주소 |
- Gesellschaft fuer Schwerionenforschung mbH
|
대리인 / 주소 |
Frommer Lawrence & Haug, LLP
|
인용정보 |
피인용 횟수 :
147 인용 특허 :
5 |
초록
▼
The present invention relates to a method of checking an isocentre and a patient-positioning device of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system, having vertical deflection means and horizontal deflection means for the vertical and horizontal
The present invention relates to a method of checking an isocentre and a patient-positioning device of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system, having vertical deflection means and horizontal deflection means for the vertical and horizontal deflection of a treatment beam perpendicular to its beam direction, with the result that the treatment beam is deflected by the grid scanner device onto an isocentre of the irradiation site, and a specific area surrounding the isocentre is scanned, wherein a check of the isocentre and a patient-positioning device is carried out and the patient-positioning device comprises a patient table rotatable about an axis of rotation of the table. For the checking, a target point within a spherical phantom is represented by means of a special specimen body and the centre point of the specimen body is visibly represented by means of several image-forming methods. On departure of the measurement results in respect of the spatial position of the centre point under the image-forming methods from a predetermined intervention threshold, the ion beam therapy system is subjected to an inspection and/or maintenance.
대표청구항
▼
The present invention relates to a method of checking an isocentre and a patient-positioning device of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system, having vertical deflection means and horizontal deflection means for the vertical and horizontal
The present invention relates to a method of checking an isocentre and a patient-positioning device of an ion beam therapy system that comprises a grid scanner device, arranged in a beam guidance system, having vertical deflection means and horizontal deflection means for the vertical and horizontal deflection of a treatment beam perpendicular to its beam direction, with the result that the treatment beam is deflected by the grid scanner device onto an isocentre of the irradiation site, and a specific area surrounding the isocentre is scanned, wherein a check of the isocentre and a patient-positioning device is carried out and the patient-positioning device comprises a patient table rotatable about an axis of rotation of the table. For the checking, a target point within a spherical phantom is represented by means of a special specimen body and the centre point of the specimen body is visibly represented by means of several image-forming methods. On departure of the measurement results in respect of the spatial position of the centre point under the image-forming methods from a predetermined intervention threshold, the ion beam therapy system is subjected to an inspection and/or maintenance. 5726423, 19980300, Westerberg et al.; US-5954980, 19990900, Westerberg et al.; US-6013900, 20000100, Westerberg et al.; US-6069345, 20000500, Westerberg; US-6139885, 20001000, Jouaneut et al. robe (40) and for transmitting said output light signal from said probe (40) to a light detector (48) located externally of the tank (32); whereby, based on the amount of light detected by said light detector (48), the level, and thus, the quantity, of fuel in the tank (32) can be determined. 7. A fuel gauging system according to claim 6, wherein said photoelectric conversion device (42) is a photovoltaic cell. 8. A fuel gauging system according to claim 6, wherein said probe (40) has a resonant circuit (44) which has an inductor and a capacitor and which is applied with said output voltage of said photoelectric conversion device (42). 9. A fuel gauging system according to claim 8, wherein said probe (40) has a magnetooptic device (46) located such that said magnetooptic device (46) is exposed to a magnetic field of said inductor, said magnetooptic device (46) being capable of transmitting light, the transmission of light though the magnetooptic device (46) being a function of said magnetic field of said inductor of said resonant circuit (44). 10. A fuel gauging system according to claim 9, wherein said fiber optic element (34) directs light from said input light signal (30) into said magnetooptic device (46), and wherein said magnetooptic device (46) transmits at least a portion of said light back to said fiber optic element (34) which transmits said light as said output light signal to said light detector (48). 11. A fuel gauging system according to claim 10, further comprising a plurality of probes (40) multiplexed on said fiber optic element (34). 12. A fuel gauging system according to claim 11, further comprising a plurality of beamsplitters (38) which direct light from said fiber optic element (34) on to each probe (40). 13. A fuel gauging system according to claim 12, wherein said light source (30) is a solid state laser. 14. A fuel gauging system for measuring the amount of fuel in a fuel tank (54), comprising: a probe (62) disposed in the tank (54) for at least partial immersion in the fuel, said probe (62) being capable of receiving an input light signal and providing an output light signal which can be utilized to determine the amount of fuel in the fuel tank (54); an excitation light source (52) located externally of the tank (54) for generating an input light signal; a first fiber optic element (56) for transmitting said input light signal from said excitation light source (52) to said probe (62); a measurement light source (70) located externally of the tank (54) for generating an input light signal; and a second fiber optic element (72) for transmitting said input light signal from said measurement light source (70) to said probe (62) and for transmitting said output light signal from said probe (62) to a light detector (74) located externally of the tank (54). 15. A fuel gauging system according to claim 14, wherein said probe (62) has a photoelectric conversion device (64) for receiving light from said excitation light source (52) and for converting said light into an output voltage. 16. A fuel gauging system according to claim 15, wherein said probe (62) has a resonant circuit (66) which has an inductor and a capacitor and which is applied with said output voltage of said photoelectric conversion device (64). 17. A fuel gauging system according to claim 16, wherein said probe (62) has a magnetooptic device (68) located such that said magnetooptic device (68) is exposed to a magnetic field of said inductor, and wherein said magnetooptic device (68) is capable of transmitting light, the transmission of light though the magnetooptic device (68) being a function of said magnetic field of said inductor of said resonant circuit (66). 18. A fuel gauging system according to claim 17, wherein said second fiber optic element (72) directs light generated by said measurement light source (70) to said magnetooptic device (68), and wherein said magnetooptic device (68) transmits light back to said second fiber
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