| 摘要 |
PROBLEM TO BE SOLVED: To provide a bed positioning system and a bed positioning method which shorten a period taken to perform radiation treatment.SOLUTION: A tomographic image information calculation means 401A extracts first tomographic image information to be used for a treatment plan, with a regulated value, and obtains second tomographic image information. A transmission length calculation means 401B obtains a transmission length at the time of obtaining first X-ray information from the second tomographic image information. A correction coefficient calculation means 401C leads out an X-ray beam hardening correction coefficient from the transmission length. An X-ray information calculation means 401D corrects the first X-ray information with the correction coefficient to generate second X-ray information. A bed moving amount calculation apparatus 311 obtains a bed moving amount on the basis of the first tomographic image information and the second tomographic image information reconstituted by the correction coefficient. A bed controller 310 controls a bed drive apparatus supporting an object to be irradiated on the basis of the bed moving amount. |
