| 摘要 |
Multileaf collimator calibration includes defining a reference position of a carriage and determining a first value, the first value being for a drift of a first position of a leaf from a first defined absolute position, the leaf being arranged on the carriage and the carriage being located at the reference position. The multileaf calibration also includes moving the carriage to a position to be checked and determining a second value, the second value being for a drift of a second position of a leaf from a second defined absolute position, the carriage being located at the position to be checked. A difference value is determined by forming the difference between the first value and the second value for the drift of the position of the leaf and using the difference value as a value for the drift of the position of the carriage for the position to be checked. |
