| 摘要 |
The invention relates to a leaf ( 1 ) for a multi-leaf collimator ( 2 ) for delimiting a high-energy beam ( 3, 3', 3 '') of an irradiation device, in particular for conformational radiation therapy. According to the invention, the multi-leaf collimator ( 2 ) comprises a plurality of opposing leaves ( 1 ), which can be brought into the beam path ( 3, 3', 3 '') by means of drives ( 4 ), in such a way that the contour ( 5 ) of said path can be shaped in accordance with the volume to be irradiated. The need for beam-absorbent material ( 7 ) is reduced, as the leaf ( 1 ) essentially only comprises a beam-absorbent material ( 7 ) of an appropriate thickness ( 8 ) in a region ( 6 ) that is brought into the path ( 3, 3', 3 '') of the high-energy beam ( 3 ) during the course of all possible positional displacements ( 9 ). The invention also relates to a corresponding multi-leaf collimator ( 2 ), a device ( 22 ) for delimiting beams, and an irradiation device.
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