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.

To provide a particle beam treatment system and a method for renewing facilities of the particle beam treatment system with which the facilities can be renewed efficiently. A particle beam treatment system 1 includes a charged particle beam generation device 2 that generates a charged particle beam Bm, a first irradiation device 4(1) that irradiates the charged particle beam to a predetermined irradiation target, a first beam transportation device 3(1) that transports the charged particle beam from the charged particle beam generation device 2 to the first irradiation device 4(1), and a first vacuum valve 33(1) that is arranged in the first beam transportation device 3(1).

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.

A radiotherapy delivery device is provided. The device includes a source of therapeutic radiation and a first detector positioned to receive radiation from the source of therapeutic radiation. The device also includes a source of imaging radiation and a second detector positioned to receive radiation from the source of imaging radiation. A collimator assembly is positioned relative to the second source of radiation to selectively control a shape of a radiation beam emitted by the second radiation source to selectively expose part or the whole of the second radiation detector. A reconstruction processor can be operatively coupled to the detector and configured to generate patient images based on radiation received by the second detector from the second source of radiation. The device is configured to move from one imaging geometry to another using all or part of the second detector.

A jaw position detection apparatus is configured to detect position information of at least one jaw moving in an arc, and includes a connecting component, a conversion mechanism, and a displacement sensor. The connecting component is fixed on a jaw. The conversion mechanism is connected to the connecting component, and the conversion mechanism is configured to convert an arc motion of the connecting component into a linear motion when the connecting component moves in an arc with the jaw. The displacement sensor is connected to the conversion mechanism, and configured to detect displacement information of the linear motion of the conversion mechanism.

An example computer-implemented method for tuning a beam spot in a radiation therapy system based on radiation field measurements has been disclosed. The example method includes configuring an electron beam to generate a first beam spot on an electron-beam target of the radiation therapy system, determining a value for one or more radiation field quality metrics for a first radiation beam that originates from the first beam spot, and based on the value, determining whether the first radiation beam is outside a specified quality range.

A set of magnetic elements is used in the beamline of a charged particle-based radiation therapy machine instead of scattering foils. The set of magnetic elements is located between the exit of the linear accelerator and the isocenter or patient, and is used for shaping and defocusing a charged particle beam used for charged particle-based treatment modalities.

Information that describes a target inside a patient to be treated with radiation is accessed from computer system memory. An arrangement of spots inside the target is determined. Each the spots corresponds to a location inside the target where a respective beam of radiation is to be directed during radiation treatment of the patient. A dose rate for each of the beams is determined. The dose rate for each beam is a dose delivered in less than one second to a spot corresponding to that beam. For example, each beam can deliver at least four grays (GY) in less than one second, and may deliver as much as 20 Gy to 50 Gy or 100 Gy or more in less than one second. A radiation treatment plan, that includes the arrangement of the spots and the dose rate for each of the beams, is stored in computer system memory.

Information that describes a target inside a patient to be treated with radiation is accessed from computer system memory. An arrangement of spots inside the target is determined. Each the spots corresponds to a location inside the target where a respective beam of radiation is to be directed during radiation treatment of the patient. A dose rate for each of the beams is determined. The dose rate for each beam is a dose delivered in less than one second to a spot corresponding to that beam. For example, each beam can deliver at least four grays (GY) in less than one second, and may deliver as much as 20 Gy to 50 Gy or 100 Gy or more in less than one second. A radiation treatment plan, that includes the arrangement of the spots and the dose rate for each of the beams, is stored in computer system memory.