Systems and methods for adjusting a beam-limiting device, the beam-limiting device including a plurality of movable components for shaping a radiation beam. The methods may include for each of the plurality movable components, determining an initial location of the movable component; determining a target location of the movable component; and determining, based on the initial location and the target location, a moving route of the movable component. The methods may also include causing the plurality of movable components to move along their respective moving routes. During the movement of the plurality of movable components along their respective moving routes, the shape of an irradiation region of the radiation beam passing through the beam-limiting device may remain unchanged or substantially unchanged.

There is provided a charged particle beam irradiation apparatus that performs irradiation of a charged particle beam, the apparatus including: an accelerator that accelerates a charged particle to generate the charged particle beam; an irradiator that includes a gantry rotatable around a rotation axis, and performs irradiation of the charged particle beam generated by the accelerator; and a transporter that includes an energy degrader provided outside the irradiator to reduce an energy of the charged particle beam generated by the accelerator, and transports the charged particle beam, which is generated by the accelerator, to the irradiator. The transporter transports the charged particle beam to the irradiator while maintaining an energy distribution of the charged particle beam that is reduced in energy by the energy degrader.

A radiation therapy system includes an accelerator and beam transport system that generates a beam of particles. The accelerator and beam transport system guides the beam on a path and into a nozzle that is operable for aiming the beam toward an object. The nozzle includes a scanning magnet operable for steering the beam toward different locations within the object, and also includes a beam energy adjuster configured to adjust the beam by, for example, placing different thicknesses of material in the path of the beam to affect the energies of the particles in the beam.

The invention comprises a segmented rolling floor apparatus and method of use thereof, such as for use in a charged particle cancer therapy system. The segmented rolling floor comprises a first spool and a second spool, attached to opposite ends of the rolling floor, which cooperatively wind and unwind the rolling floor. The segmented rolling floor circumferentially surrounds a nozzle system penetrating through an aperture in the segmented rolling floor, where the nozzle system is used to deliver charged particles, from an accelerator, to a tumor of a patient. The rolling floor and nozzle systems move at respective rates maintaining the nozzle system in the aperture allowing for a safe/walkable floor while allowing treatment of the tumor as a gantry rotates the nozzle system and delivers protons to the tumor from positions above and below the floor.

The disclosure provides a radiotherapy system, comprising: a bed, for supporting the patient; and a bridge, comprising one or more rolling elements for supporting the bed and allowing the bed to be moved along a surface of the bridge. The one or more rolling elements are located at respective fixed positions in the bridge.

A ridge filter 100 provided in a particle therapy system includes a repeating structure body 101 having a plurality of extending parts 101c extending along the incident direction P of a proton beam 204, and a bottom plate 102 provided on the lower face 101b side opposite to the incident side of the proton beam 204 of the repeating structure body 101. In addition, the repeating structure body 101 and the bottom plate 102 are integrally formed by a molding method, and each of the repeating structure body 101 and the bottom plate 102 is formed of a laminate of resin.

A radiography and radiotherapy apparatus comprises a body unit, a gantry configured to rotate relative to the body unit, a treatment table on which an object is placed and configured to slide into holes formed in the body unit and the gantry and move in a vertical direction, a gantry driving part configured to rotate the gantry, a radiation irradiation part mounted on the gantry and configured to irradiate radiation toward the object, an image detector mounted to face the radiation irradiation part in the gantry and configured to detect the radiation irradiated from the radiation irradiation part, and a beam stopper provided at a lower end of the image detector and configured to block the radiation.

An X-ray lens arrangement for forming a radiation pattern as a focal track is disclosed. The pattern comprises at least one 3-dimensional focal track of radiation. The aforesaid lens arrangement has a main axis passing through intensity weighted centroids of the Xray source and the pattern. The lens arrangement includes at least one reflecting surface of continuously varying Rowland arcs. Each point belonging to the focal track is linked to each elemental point composing an emitting surface of said source by a corresponding Rowland arc.

The present disclosure provides a system and method for X-ray imaging. The method of calculating scatter in an X-ray image may include forming a modulated X-ray image. The method of forming the modulated X-ray image may include acquiring X-rays through a collimator module and an imaged object in sequence to generate an X-ray image group; the acquisition may be performed during a movement of the collimator module in a first direction and the X-ray image group may include a plurality of X-ray images acquired at different times during the movement of the collimator; extracting sub-zones from the plurality of X-ray images in the X-ray image group; combining the sub-zones in the first direction to form the modulated X-ray image. In the present disclosure, an intensity distribution of the X-rays may be adjusted flexibly using a collimator without adding any extra hardware. In addition, scatter components in the X-ray images may be calculated to eliminate the scatter in the X-ray images finally.

It is provided a method for determining ripple filter settings for an ion therapy beam being capable of providing ions of different energy levels to a target volume. The method is performed in a treatment planning system and comprises the steps of: determining at least one beam direction to use to cover a target volume; and assigning a ripple filter setting to each one of a plurality of sub-beams of each one of the at least one beam direction such that each sub-beam is assigned a different ripple filter setting, wherein each ripple filter setting results in a different effect on a Bragg peak width in a direction along the beam, and each energy level is assigned to one of the plurality of sub-beams. The step of assigning a ripple filter setting comprises optimizing based on different filter settings for different sub-beams for each beam direction.