Provided is a focusing head, including: a cartridge configured to carry a plurality of radiation sources; a shielding roller with the cartridge therein; a first driving assembly connected to the cartridge and configured to drive the cartridge to rotate; and a second driving assembly connected to the shielding roller and configured to drive the shielding roller to rotate.

Systems and methods are provided for registering images. The systems and methods perform operations comprising: receiving, at a first time point during a given radiation session, a first imaging slice comprising an object, the first imaging slice corresponding to a first plane; accessing, at the first time point during the given radiation session, a composite imaging slice corresponding to the first plane, the composite imaging slice being generated using a plurality of imaging slices obtained prior to the first time point; spatially registering the first imaging slice and the composite imaging slice; determining movement of the object using the spatially registered first imaging slice and the composite imaging slice; and generating an updated therapy protocol to control delivery of a therapy beam based on the determined movement.

The present invention relates to the field of radiation therapy and methods, software and systems for treatment planning. A target volume of a region of a patient to be treated during a treatment of a patient in a radiation therapy unit is obtained. A first Isocenter location procedure is performed including inter alia evaluating potential isocenter locations along normal directions of the surface and respective isodistance surfaces in respective starting voxel in a direction inwards from the surface, and a second isocenter location procedure is performed including inter alia identifying a median axis of the target volume or center point of the target volume, placing isocenters at locations along the median axis, placing isocenters in the target volume based on a distance to existing isocenters and to the target surface.

Systems and methods are provided for registering images. The systems and methods perform operations comprising: receiving, at a first time point in a given radiation session, a first imaging slice corresponding to a first plane; encoding the first imaging slice to a lower dimensional representation; applying a trained machine learning model to the encoded first imaging slice to estimate an encoded version of a second imaging slice corresponding to a second plane at the first time point to provide a pair of imaging slices for the first time point; simultaneously spatially registering the pair of imaging slices to a volumetric image, received prior to the given radiation session, comprising a time-varying object to calculate displacement of the object; and generating an updated therapy protocol to control delivery of a therapy beam based on the calculated displacement of the object.

A control driving method for a radiotherapy device is disclosed. The radiotherapy device includes a collimator and a plurality of radioactive sources, wherein the radioactive sources are disposed within a preset angle range in a longitude direction, the longitude direction being a circular direction perpendicular to a central axis of the radiotherapy device, and the radioactive sources are configured to emit beams that intersect at a common focus after being collimated by a collimator. The method comprises: obtaining at least one protection angle range and driving the radiotherapy device such that no beam from the plurality of the radioactive sources within the at least one protection angle range is emitted.

A radiation treatment device is provided. The device includes an imaging unit and a single radiotherapy unit adjacent to a second end of the imaging unit. The imaging unit includes a first opening at a first end of the imaging unit adapted to receive a patient; at least one imaging source; and at least one imager arranged opposite the imaging source. The imaging source and the imager are rotatable about the rotational axis. The radiotherapy unit includes a source body carrying radioactive sources and a collimator having collimation channels. The collimation channels permit treatment beams emitted by the radioactive sources to be projected inside the imaging unit and focused at an intersection point located within an imaging beam of the imaging unit. The source body and the collimator are arranged concentric about the rotational axis and close a second opening at the second end.

A radiosurgical method for treating cardiorenal disease of a patient, the method including directing radiosurgery radiation from outside the patient towards one or more target treatment regions encompassing sympathetic ganglia of the patient so as to inhibit the cardiorenal disease. In an exemplary embodiment, the method further includes acquiring three dimensional planning image data encompassing the first and second renal arteries, planning an ionizing radiation treatment of first and second target regions using the three dimensional planning image data so as to mitigate the hypertension, the first and second target regions encompassing neural tissue of or proximate to the first and second renal arteries, respectively, and remodeling the target regions by directing the planned radiation from outside the body toward the target regions.

Devices, systems, and methods for planning radiosurgical treatments for neuromodulating a portion of the renovascular system may be used to plan radiosurgical neuromodulation treatments for conditions or disease associated with elevated central sympathetic drive. The renal nerves may be located and targeted at the level of the ganglion and/or at postganglionic positions, as well as preganglionic positions. Target regions include the renal plexus, celiac ganglion, the superior mesenteric ganglion, the aorticorenal ganglion and the aortic plexus. Planning of radiosurgical treatments will optionally employ a graphical representation of a blood/tissue interface adjacent these targets.

A radiotherapy head can include an electron accelerator, a deflection control assembly, a collimator, and a target material. The deflection control assembly is provided between the electron accelerator and the collimator, the collimator is provided with a plurality of collimating holes, and the target material is provided at an entrance of the each of the plurality of collimating holes; the deflection control assembly is configured to adjust a deflection angle of electron beams emitted by the electron accelerator, and emit angle-deflected electron beams to the target material; the target material is configured to convert the electron beams emitted to the target material into X-rays; and the collimator is configured to project the X-rays to a target via the plurality of collimating holes.

The present disclosure discloses a collimator, a radiotherapy device and a control driving method thereof, belonging to the medical technical field. The collimator is applied to a radiotherapy device, the radiotherapy device includes a plurality of radioactive sources, a plurality of collimating hole groups are arranged on the collimator, and an included angle of each collimating hole group in the longitudinal direction is within a preset included angle range. Each of the collimating hole groups includes a plurality of collimating holes, and beams emitted from the plurality of radioactive sources intersect at a common focus after passing through each collimating hole of the collimating hole group. The collimator, the radiotherapy device and the driving control method thereof can protect sensitive tissues and organs during treatment.