Irradiation nozzle, particle therapy apparatus, particle therapy system, and method for controlling particle therapy system

A method for controlling a particle therapy system, wherein

• the particle therapy system includes a particle therapy apparatus, an imaging apparatus for a target object, and a control apparatus,
• the particle therapy apparatus includes an accelerator that accelerates a radiotherapy beam, and an irradiation nozzle that irradiates the target object with the accelerated radiotherapy beam,
• the irradiation nozzle includes a nozzle base part fixed on a beam axis through which the radiotherapy beam passes, and a nozzle tip part that irradiates the target object with the radiotherapy beam having passed through the nozzle base part,
• the nozzle tip part is fixed at a first position when the target object is irradiated with the radiotherapy beam and is fixed at a second position when the target object is imaged,
• a curved movement path through which the nozzle tip part is movable between the first position and the second position is provided, and
• the imaging apparatus is movable between an imaging position at which the target object on the beam axis is imaged and a standby position at which the imaging apparatus does not interfere with the nozzle tip part when the nozzle tip part is at the irradiation position.

A method for controlling a particle therapy system, wherein

• the particle therapy system includes a particle therapy apparatus, an imaging apparatus for a target object, and a control apparatus,
• the particle therapy apparatus includes an accelerator that accelerates a radiotherapy beam, and an irradiation nozzle that irradiates the target object with the accelerated radiotherapy beam,
• the irradiation nozzle includes a nozzle base part fixed on a beam axis through which the radiotherapy beam passes, and a nozzle tip part that irradiates the target object with the radiotherapy beam having passed through the nozzle base part,
• the nozzle tip part is fixed at a first position when the target object is irradiated with the radiotherapy beam and is fixed at a second position when the target object is imaged,
• a curved movement path through which the nozzle tip part is movable between the first position and the second position is provided,
• the imaging apparatus is movable between an imaging position at which the target object on the beam axis is imaged and a standby position at which the imaging apparatus does not interfere with the nozzle tip part when the nozzle tip part is at the irradiation position, and
• when it is detected that imaging by the imaging apparatus is completed, the control apparatus starts segmentation by using a captured image.

A method for controlling a particle therapy system, wherein

• the particle therapy system includes a particle therapy apparatus, an imaging apparatus for a target object, and a control apparatus,
• the particle therapy apparatus includes an accelerator that accelerates a radiotherapy beam, and an irradiation nozzle that irradiates the target object with the accelerated radiotherapy beam,
• the irradiation nozzle includes a nozzle base part fixed on a beam axis through which the radiotherapy beam passes, and a nozzle tip part that irradiates the target object with the radiotherapy beam having passed through the nozzle base part,
• the nozzle tip part is fixed at a first position when the target object is irradiated with the radiotherapy beam and is fixed at a second position when the target object is imaged,
• a curved movement path through which the nozzle tip part is movable between the first position and the second position is provided,
• the imaging apparatus is movable between an imaging position at which the target object on the beam axis is imaged and a standby position at which the imaging apparatus does not interfere with the nozzle tip part when the nozzle tip part is at the irradiation position,
• when it is detected that imaging by the imaging apparatus is completed, the control apparatus starts segmentation by using a captured image, and
• when it is detected that the segmentation by the particle therapy system is completed, the control apparatus further starts treatment plan creation by using segmented contour information.