A beam delivery system for a radiotherapy system comprises a particle accelerator for generating a radiation beam and a positioning apparatus for moving the particle accelerator. The positioning apparatus comprises a counterbalanced lever carrying the particle accelerator. The particle accelerator may be a proton accelerator producing a proton beam.

A radiotherapy apparatus for the delivery of an energetic beam to a target tissue in a treatment zone, including: a rotatable gantry for rotating the end of a beam delivery system about a circle centered on an isocentre and normal to an axis of rotation Z1 of the gantry, the path between the end of the beam delivery system and the isocentre defining a central beam axis Z2 at every rotation angle of the gantry about the axis of rotation Z1; an imaging ring having a central bore and an imaging system for acquiring images of a patient in an imaging zone of the imaging system, wherein the imaging ring is located in the radiotherapy apparatus such that its imaging zone intersects the axis of rotation Z1 of the gantry, and wherein the imaging ring is mechanically coupled to the rotatable gantry through a mechanical structure.

An imaging apparatus comprises a rotatable gantry system positioned at least partially around a patient support; a first source of radiation coupled to the rotatable gantry system, the first source of radiation configured for imaging radiation; a second source of radiation coupled to the rotatable gantry system; and a first radiation detector coupled to the rotatable gantry system and laterally movable relative to a central beam of the first source of radiation to receive radiation from at least the first source of radiation over various fields of view. Alternative configurations of the imaging apparatus and methods of using the imaging apparatus are also provided.

An adjustable support for a gantry (3) for a radiation therapy apparatus or for a medical imaging apparatus, wherein the support comprises: abase (5), a mounting member (1), and an attachment element (7); wherein a lower part of the mounting member (1) engages with the base (5); wherein the attachment element (7) engages with an upper part of the mounting member (1); and wherein the position of the upper part of the mounting member (1), relative to the base (5) is adjustable by the attachment element (7).

A system and method of performing prospective and retrospective on-line adaptive radiotherapy. The method includes performing, during a treatment delivery session, delivery of a dose of radiation to an anatomical volume. The method includes detecting, during the treatment delivery session, a current state of the anatomical volume. The method includes predicting a future change in the current state of the anatomical volume during the treatment delivery session. The method includes adjusting, while the anatomical volume is in the current state, the treatment delivery to anticipate the future change in the anatomical volume.

A system and method of performing prospective and retrospective on-line adaptive radiotherapy. The method includes performing, during a treatment delivery session, delivery of a dose of radiation to an anatomical volume. The method includes detecting, during the treatment delivery session, a current state of the anatomical volume. The method includes predicting a future change in the current state of the anatomical volume during the treatment delivery session. The method includes adjusting, while the anatomical volume is in the current state, the treatment delivery to anticipate the future change in the anatomical volume.

A radiation therapy system comprises a beam delivery system located in a treatment room. The beam delivery system comprises a particle accelerator for generating a radiation beam, and a positioning apparatus for moving the particle accelerator to any one of a plurality of treatment locations in said treatment room. The system includes a plurality of waiting rooms each having a patient support apparatus that is movable between a waiting state in which it is located in the respective waiting room, and a treatment state in which it is located in a respective one of the treatment locations in the treatment room. The positioning apparatus comprises a counterbalanced lever which carries the particle accelerator. The particle accelerator is preferably a proton accelerator producing a proton beam.

An x-ray imaging apparatus and associated methods are provided to execute multi-pass imaging scans for improved quality and workflow. An imaging scan can be segmented into multiple passes that are faster than the full imaging scan. Data received by an initial scan pass can be utilized early in the workflow and of sufficient quality for treatment setup, including while the another scan pass is executed to generate data needed for higher quality images, which may be needed for treatment planning. In one embodiment, a data acquisition and reconstruction technique is used when the detector is offset in the channel and/or axial direction for a large FOV during multiple passes.

Systems, devices, and methods for imaging-based calibration of radiation treatment couch position compensations.

Multimodal imaging apparatus and methods include a rotatable gantry system with multiple sources of radiation comprising different energy levels (for example, kV and MV). Fast slip-ring technology and helical scans allow data from multiple sources of radiation to be combined or utilized to generate improved images and workflows, including for IGRT. Features include large field-of-view (LFOV) MV imaging, kV region-of-interest (ROI) imaging, and scalable field-of-view (SFOV) dual energy imaging.