Patent attributes
Disclosed a leaf positioning device (100) for a multi-leaf collimator, comprising: a plurality of positioning signal transmitters which are in the leaf guide rail box, wherein the plurality of positioning signal transmitters are arranged opposite to a first end surface of leaves of the multi-leaf collimator; a plurality of positioning signal receivers which are in the leaf guide rail box and corresponding to the plurality of positioning signal transmitters, wherein the plurality of positioning signal receivers are arranged opposite to a second end surface of the leaves of the multi-leaf collimator; wherein, the plurality of positioning signal transmitters are configured to transmit positioning signals to the plurality of positioning signal receivers, and the plurality of positioning signal receivers are configured to generate output signals according to the positioning signals; a positioning device which is connected to each of the plurality of positioning signal receivers, wherein the positioning device is configured to receive the output signals sent out by each of the plurality of positioning signal receivers, and positions the leaves of the multi-leaf collimator according to the output signals.
