| 摘要 |
An objective of this particle beam projection chamber is to ensure that after a patient is positioned on somewhere other than the patient bed in a projection region used when actually projecting a particle beam, the amount of positional deviation in the positioning state of the patient is within an allowable range when being moved to the projection region from the entrance of the projection chamber. This particle beam projection chamber (20) comprises: a projection execution chamber (22) wherein a wherein a patient bed (2) comprising a detachable top board (5) and a drive device (9) for driving the top board (5) is placed, said projection execution chamber (22) being surrounded by a shield wall (21); a path (23) which is disposed on a side in the shield wall (21) where an antechamber (25) in which a patient (45) is to be positioned on the top board (5) is located, such that the patient (45) positioned on the top board (5) may pass into the projection execution chamber (22) by a conveyance device (10) in a straight line; and a shield door (24) which shields radiation leaking at or less than a managed value when the particle beam is projected, said shield door (24) being provided at a projection chamber entrance (30) which is located on the antechamber (25) side of the path (23). |
