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公开(公告)号：EP2085117B1
公开(公告)日：2012-08-08
申请号：EP09000841.8
申请日：2009-01-22
申请人： Elekta AB (PUBL)
CPC分类号： A61N5/1049 , A61B2090/3941 , A61N5/1042 , A61N5/1045 , A61N5/1048 , A61N2005/1059 , G06T7/0012 , G06T2207/10064 , G06T2207/30204 , G21K1/04 , G21K1/046 , H04N5/2256
摘要： A fluorescing marker is used in order to mark (for example) a leaf of a multi-leaf collimator and/or the reference points within the field of view. The markers are illuminated with light tuned to cause the markers to fluoresce at a wavelength different to that of the illuminating light. The fluorescence is then detected by a camera. This method allows the image to be captured by the camera with increased contrast. Accordingly, the present invention provides a multi-leaf collimator for a radiotherapeutic apparatus, comprising at least one leaf having a fluorescent marker. The fluorescent marker will usually emit light of a wavelength longer than the incident light, allowing suitable filters to be provided in order to distinguish the light emitted by the markers. A suitable material for use in the fluorescent markers is ruby. The present invention also provides a radiotherapeutic apparatus comprising a multi-leaf collimator as defined above, and a camera arranged to view the fluorescent markers. A source of illumination for the fluorescent markers is ideally monochromatic, or nearly so. The camera can have a filter arranged to substantially prevent light of the wavelength emitted by the source of illumination from entering the camera, thereby improving the contrast of the image. The radiotherapeutic apparatus can also comprise a source of illumination that is optically co-located with a radiation source, to allow the radiation field that will be emitted to be checked visually by an operator. The co-located source is preferably substantially monochromatic, emitting substantially no light at the wavelength of the fluorescent markers. A filter can then be placed over an output of the radiotherapeutic apparatus, for blocking light of the wavelength of the fluorescent markers and thereby enhancing the contrast of the image that is taken of the fluorescent markers.
摘要翻译： 使用荧光标记来标记（例如）多叶准直器的叶和/或视野内的参考点。 用调光的光照亮标记物，使标记物以不同于照明光的波长发出荧光。 然后通过照相机检测荧光。 这种方法允许相机拍摄的图像增加了对比度。 因此，本发明提供了一种用于放射治疗装置的多叶准直器，包括至少一个具有荧光标记的叶片。 荧光标记物将通常发射比入射光更长的波长的光，从而允许提供合适的滤光片，以便区分标记物发出的光。 用于荧光标记物的合适材料是红宝石。 本发明还提供一种放射治疗装置，其包括如上所述的多叶准直器和布置成观察荧光标记物的照相机。 荧光标记物的照明源理想地是单色的，或几乎是这样。 相机可以具有滤光器，其布置成基本上防止由照射源发射的波长的光进入照相机，从而改善图像的对比度。 放射治疗装置还可以包括与辐射源在光学上共同定位的照明源，以允许操作者视觉地检查将被发射的辐射场。 共位源优选基本上单色，在荧光标记的波长处基本上不发射光。 然后可以将滤光器放置在放射治疗装置的输出端上，用于阻挡荧光标记的波长的光，从而增强取自荧光标记的图像的对比度。
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公开(公告)号：EP2085117A1
公开(公告)日：2009-08-05
申请号：EP09000841.8
申请日：2009-01-22
申请人： Elekta AB (PUBL)
CPC分类号： A61N5/1049 , A61B2090/3941 , A61N5/1042 , A61N5/1045 , A61N5/1048 , A61N2005/1059 , G06T7/0012 , G06T2207/10064 , G06T2207/30204 , G21K1/04 , G21K1/046 , H04N5/2256
摘要： A fluorescing marker is used in order to mark (for example) a leaf of a multi-leaf collimator and/or the reference points within the field of view. The markers are illuminated with light tuned to cause the markers to fluoresce at a wavelength different to that of the illuminating light. The fluorescence is then detected by a camera. This method allows the image to be captured by the camera with increased contrast. Accordingly, the present invention provides a multi-leaf collimator for a radiotherapeutic apparatus, comprising at least one leaf having a fluorescent marker. The fluorescent marker will usually emit light of a wavelength longer than the incident light, allowing suitable filters to be provided in order to distinguish the light emitted by the markers. A suitable material for use in the fluorescent markers is ruby. The present invention also provides a radiotherapeutic apparatus comprising a multi-leaf collimator as defined above, and a camera arranged to view the fluorescent markers. A source of illumination for the fluorescent markers is ideally monochromatic, or nearly so. The camera can have a filter arranged to substantially prevent light of the wavelength emitted by the source of illumination from entering the camera, thereby improving the contrast of the image. The radiotherapeutic apparatus can also comprise a source of illumination that is optically co-located with a radiation source, to allow the radiation field that will be emitted to be checked visually by an operator. The co-located source is preferably substantially monochromatic, emitting substantially no light at the wavelength of the fluorescent markers. A filter can then be placed over an output of the radiotherapeutic apparatus, for blocking light of the wavelength of the fluorescent markers and thereby enhancing the contrast of the image that is taken of the fluorescent markers.
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