68 results about "Radiotherapy unit" patented technology

The present invention belongs to the field of radiotherapy devices and discloses an applicator for electron beams, an applicator structure, and a method for determining electron beam energy. The applicator structure includes a scattering head, a scattering component, a beam-limiting component, and a sealing component. The scattering head is provided with an upwardly opening internal cavity, the opening of the cavity being tangent to the scattering component. The scattering component is arranged between the lower end face of the beam channel and the cavity to scatter electrons and expand the beam, while simultaneously reducing the X-rays incidentally generated due to bremsstrahlung and protecting surrounding normal tissues. The beam-limiting component is provided with a beam channel. The sealing component is located on the upper portion of the beam-limiting component and encapsulates the entrance of the beam channel. The applicator of the present invention can form a spherical dose distribution that is more conformal to the radiotherapy target area, complete a single high-dose radiotherapy during surgery, effectively improve the local control rate of tumors, effectively reduce the side effects caused by X-rays, protect surrounding normal tissues, shorten the treatment time, and is safe, effective, and reliable.

A therapeutic apparatus may be provided. The therapeutic apparatus may include a radiation therapy device configured to apply therapeutic radiation to a region of interest (ROI). The radiation therapy device may include an accelerator configured to accelerate electrons in an electron beam to produce a radiation beam of the therapeutic radiation, a magnetic resonance imaging (MRI) device configured to acquire MRI data with respect to the ROI. The MRI device may include an annular cryostat including at least one annular structure enclosing one or more chambers.

A device for concentrating ionizing radiation fluence is disclosed having a coupling structure linking the external radiotherapy device with linear accelerator to an external structure, whose central axis is hollow with an input window through which electrons enter attaching to the rotation device; a rotation system linking the coupling structure with a coupling flange rotating an inner structure; a deflection system in the inner structure, wherein the deflection system has first and second magnetic deflection devices; a system for controlling the focal point, which is in the electron deflection system, having an electronic control system controlling a set of motors that produce coordinated movements of the second magnetic deflection device, a correction element and a collimator, which change the position of the focal point; and at least two laser diodes on the edge of the collimator pointing towards the focal point determining the position of the electron beam generated.

The present disclosure provides a modular radiation therapy apparatus comprising a plurality of modules configured to sequentially interlock within one another in an annular arrangement, wherein the plurality of modules are individually extractable from the annular arrangement and at least a subset of the plurality of modules comprise computing elements configured to communicate with one another, the plurality of modules comprising a collimator module comprising a multi-leaf collimator (MLC) and at least one sensor, a linear accelerator (LINAC) module comprising at least one of a magnetron or a klystron, at least one imaging module comprising at least one of an image detector, an imaging source, a magnetic imaging system, a single photon emission computed tomography (SPECT) system, or a positron emission tomography (PET) system, a patient tracking module, a cooling module, and a vacuum module, and performing at least one of: monitoring a respective status of the plurality of modules via onboard sensors and computing elements to determine whether any module is in an error state and provisioning status information and module identifiers to a remote computing environment; or distributing computational workloads among the plurality of modules and communicating with a remote computing environment to offload processing tasks using federated processing operations.

A medical imaging and / or radiotherapy apparatus incorporates a display for projecting a visible image to a patient lying on a patient table. A projector projecting the visual image moves in cooperation with the patient table so that it appears to the patient to be motionless. In exemplary embodiments, the projector projects the visible image within a patient tunnel of the medical apparatus, including in some embodiments an extended field of view medical imaging apparatus. In other exemplary embodiments, the projector projects the visible image on a screen above the patient table of a tunnel-less medical apparatus. The projector is maintained outside the imaging response line of the detector within the imaging field or outside the radiotherapy beam area to avoid potential degradation of captured diagnostic images or degradation of the radiotherapy beam.

An x-ray FLASH radiotherapy device uses an electron beam to generate x-rays on a target element. The focal area on the target element is about 1 to about 12 cm2. The target element is separated from a radiotherapy patient by a thin aerogel insulator. Using about 50 to 200 kV of power, the x-ray FLASH radiotherapy device administers 40 Gy / s of radiation or more during short bursts or pulses of one second or less. Due to the short duration of these pulses, heating of the target element is limited, thereby reducing the source to surface distance between the radiation source and the patient.

A radiotherapy apparatus is described. The radiotherapy apparatus comprises a radiation source, a beam shaping apparatus, a beam receiving apparatus, and a controller configured to control the beam shaping apparatus. The radiation source is configured to deliver radiation in each of a coplanar configuration and at least one non-coplanar configuration. The beam shaping apparatus is configured to direct the radiation produced by the radiation source towards the beam receiving apparatus in each of the coplanar configuration and the at least one non-coplanar configuration. The controller is configured to control the beam shaping apparatus to apply a limit on a field of radiation produced by the radiation source based on whether the radiation source is configured in the coplanar configuration or the at least one non-coplanar configuration.

To provide a positioning apparatus, a radiation therapy apparatus and a positioning method which can perform highly accurate positioning of a patient while reducing a calculation time.SOLUTION: An image acquisition unit 21 acquires a plurality of perspective X-ray images obtained by imaging a subject. A pseudo perspective X-ray image creation unit 22 creates a pseudo perspective image obtained by projecting a three-dimensional perspective image of the subject on a detection surface with respect to an imaging axis for each imaging axis of the perspective X-ray image. An image collation unit 24 obtains a correction axis that corrects the imaging axis on the basis of a two-dimensional movement amount being a deviation amount between the perspective X-ray image and the pseudo perspective X-ray image according to the imaging axis for each of the plurality of imaging axes, and calculates a movement amount from an intersection of each imaging axis to a middle point on a common perpendicular of each correction axis as a bed movement amount of moving a bed.SELECTED DRAWING: Figure 1

The present application relates to a kind of image guided radiotherapy device and control method.According to a specific embodiment, the radiotherapy device includes: treatment unit, which includes treatment head, the treatment head is used to generate the ray of radiotherapy;Imaging unit is used to image the target area of patient, the imaging unit is integrally installed with the treatment head;And planning unit is connected with the treatment unit and the imaging unit by cable.The radiotherapy device of the present application can be suitable for external radiotherapy and intraoperative radiotherapy, and has higher radiotherapy precision.

The utility model discloses a radiotherapy device with a turnover structure, which relates to the technical field of radiotherapy devices and comprises a fixed support, a first motor is arranged at the front end of the fixed support, a glass plate is arranged above the fixed support, and a turntable is arranged at the front ends of a vertical column and a cover plate. A third motor is arranged on the outer surface of the rear end of the stand column, an extension rod is arranged on the outer surface of the front end of the rotating disc, a radiotherapy irradiation mechanism is arranged below the extension rod, and a signal receiving plate is arranged below the radiotherapy irradiation mechanism. According to the radiotherapy device with the turnover structure, a patient lies above the glass plate, the lead screw is controlled to rotate through the arranged first motor, so that the glass plate is moved to the position below the radiotherapy irradiation mechanism to be irradiated, the irradiation result is received through the arranged signal receiving plate, and the radiotherapy irradiation result is transmitted to the patient through the signal receiving plate. And the cover plate is controlled to rotate through the arranged third motor, so that the radiotherapy irradiation mechanism is driven to turn over, and multi-angle irradiation is realized.

An x-ray FLASH radiotherapy device uses an electron beam to generate x-rays on a target element. The focal area on the target element is about 1 to about 12 cm2. The target element is separated from a radiotherapy patient by a thin aerogel insulator. Using about 50 to 200 kV of power, the x-ray FLASH radiotherapy device administers 40 Gy / s of radiation or more during short bursts or pulses of one second or less. Due to the short duration of these pulses, heating of the target element is limited, thereby reducing the source to surface distance between the radiation source and the patient.

The present invention provides treatment equipment and a radiation therapy device that can reduce the size of the treatment room while minimizing the limitations on the range of motion of the treatment table. [Solution] During the first slide, the movable door 70 slides to the left in the lateral direction D1 relative to the irradiation port 55a, and during the second slide, the movable door 70 slides to the right in the lateral direction D1 relative to the irradiation port 55a. In other words, when the movable door 70 slides to one side in the lateral direction D1, there is no movable door 70 on the other side, and when it slides to the other side in the lateral direction D1, there is no movable door 70 on one side. Therefore, when the treatment table 60 moves to be close to the wall 103 (as shown in Figures 5(a) and 5(b)), the movable door 70 can be slid to the opposite side of the treatment table 60 to secure space for the treatment table 60. At this time, the movable door 70 does not need to be moved further away from the irradiation port 55a than necessary to prevent interference with the treatment table 60.

A radiotherapy couch top configured to support a subject such as a patient, which can be included as a part of a patient support apparatus of a radiotherapy apparatus can include a first longitudinal portion with a first lateral width and a second longitudinal portion with a second lateral width. The second lateral width can be smaller than the first lateral width, and the second longitudinal portion is integrally formed with the first longitudinal portion.

The brain is slightly off-centered within the skull. In addition, current patient immobilization implements do not provide sufficient position (posture) reproducibility, and aligning a device in order to accurately irradiate a treatment target site in the brain takes a long time.　A subject positioning method according to the present invention includes: a step for obtaining a treatment planning image of a subject immobilized relative to a reference plane in order to make a treatment plan for the subject; a step for obtaining a pre-treatment image of the subject immobilized relative to the reference plane immediately prior to treatment of the subject; a step for determining a posture correction value with which the cerebral sulci in the treatment planning image and the cerebral sulci in the pre-treatment image can be made to overlap; and a step for correcting the posture of the subject during treatment on the basis of the posture correction value. In the subject positioning method, the cerebral sulci in the treatment planning image and the pre-treatment image are adjusted to coincide with each other, whereby radiation can be accurately applied to the treatment target site.

A method for needle position optimization for prostate brachytherapy for use with a radiation delivery device configured to use a plurality of needles inserted into a prostate of a patient includes obtaining imagery of the prostate of the patient, generating a needle pool for prostate brachytherapy treatment of the patient based on the imagery of the prostate of the patient, and determining at a computing device an optimum prostate brachytherapy treatment plan for the patient by iteratively removing needles from the needle pool by forming and computationally solving a convex optimization problem wherein the convex optimization problem uses a quadratic dosimetric penalty function, dwell time regularization by total variation, and block sparsity regularization term.

An image guided radiotherapy apparatus and a control method are provided. According to a specific embodiment, the radiotherapy apparatus includes: a treatment unit, which includes a treatment head for generating radiation beam for radiotherapy; an imaging unit for imaging a target area of a patient, wherein the imaging unit is integrated mounted with the treatment head. The radiotherapy apparatus of the present invention can be applicable to both extracorporeal and intraoperative radiotherapy, and has a high radiotherapy accuracy.

To provide a beam monitor device which enables a three-dimensional structure of a beam to be grasped.SOLUTION: An imaging unit generates a plurality of photographed images obtained by imaging fluorescent light generated according to a proton beam 103 from each of a plurality of directions intersecting the travel direction of the proton beam 103. A computer 13 acquires a three-dimensional beam distribution being the distribution of the proton beam 103 in the three-dimensional space on the basis of the plurality of photographed images. A computer 14 calculates variance and covariance due to the position and momentum of the proton beam 103 in the two directions intersecting the travel direction of the proton beam 103 on the basis of the three-dimensional beam distribution.SELECTED DRAWING: Figure 1

The system comprises a magnetic resonance imaging (MRI) device (310) configured for acquiring MRI data about a region of interest (ROI), and a radiotherapy device (300) configured for radiotherapy of at least a portion of the region of interest.

The radiotherapy device comprises a rotatable gantry, a support surface and a plurality of cameras. The rotatable gantry comprises a front 250, a rear 260 and a bore 180. The support surface 110 is mo

A radiation therapy arrangement includes a holding device, an x-ray source, on which an applicator can be arranged, wherein the x-ray source is arranged on the holding device and is held with the holding device so as to be positionable and orientable, a sensor system, which is configured to capture a pose and / or a pose change of the x-ray source and / or of the applicator at least during radiation, and a control device, wherein the control device is configured to evaluate the captured pose and / or the captured pose change and, proceeding from the captured pose and / or the captured and / or a determined pose change, to perform or initiate a shut-off of the x-ray source. Furthermore, the disclosure relates to a method for operating a radiation therapy arrangement.

The present application relates to a kind of multi-head radiotherapy device, belong to radiotherapy technical field, including particle source, beam splitting element, deflection element and multiple independent head, particle source is used to generate charged particle beam pulse, charged particle beam pulse is cut into multiple sub-pulse of different transmission direction by beam splitting element, the transmission direction of sub-pulse is deflected again by deflection element, after deflection sub-pulse is injected into head by transmission beam line, multiple head is located and different, it is irradiated to tumor from different directions, the present application can complete the irradiation of multiple beams to tumor target area simultaneously in very short time, shorten the entire radiotherapy time, at the same time, it can be conformal to target area without rotating head, save time and cost, novel structure.

Methods, systems and computer-readable media for controlling a radiotherapy apparatus are disclosed. A method for controlling a radiotherapy apparatus comprises obtaining a first treatment plan comprising positioning information of a beam shaping apparatus of the radiotherapy apparatus; receiving, during delivery of a radiation therapeutic beam to a target on a patient, information including a positional shift of the target; and generating a revised treatment plan based on the first treatment plan, the generating of the revised treatment plan comprising determining an updated configuration of the beam shaping apparatus from the positioning information of the first treatment plan based on the positional shift of the target.

To provide a fixture for radiation treatment that facilitates extension of the shoulder joint in the dorsal direction in the supine position, and that enables an irradiation site to be irradiated in an appropriate irradiation body position even when the upper limbs cannot be raised.SOLUTION: A fixture for radiation treatment to be used with a patient in the supine irradiation position comprises: a back support part that can be placed between a top plate mounted on a bed provided in a radiation treatment system and the back of the patient; and a leg part that can be fixed to the top plate.SELECTED DRAWING: Figure 1

The present disclosure provides radiotherapy control and radiotherapy plan generation methods, device, and system, and a medium. The method includes: controlling a diagnosis-treatment integrated couch to move a target object to a diagnostic device, so as to acquire a diagnostic image of the target object through the diagnostic device; and controlling the diagnosis-treatment integrated couch to move the target object from the diagnostic device to a radiotherapy device, and synchronously triggering generation of a radiotherapy plan for the target object based on the diagnostic image.

A microwave source used in the radiotherapy device can be provided. The microwave source may include an anode block and one or more cathodes. The cathode of the microwave source may include a cathode support element having a plurality of slots. The plurality of slots can be axially around a circumference of the cathode support element. The microwave source may include a cathode heater including at least one filament. A first part of the at least one filament may be wound around the cathode support element along a first direction and received by a first portion of the plurality of slots, and a second part of the at least one filament may be wound around the cathode support element along a second direction and received by a second portion of the plurality of slots.

A time-series signal prediction device according to an embodiment includes a time-series signal acquirer, a block converter, a feature vector acquirer, and a feature vector converter. The time-series signal acquirer acquires a time-series signal associated with a patient's biological information. The block converter divides the time-series signal into sub signals at predetermined intervals and converts the sub signals to block signals of a time series which is shorter than a time series of the time-series signal. The feature vector acquirer acquires, from the block signals, a feature vector indicating a time-series signal at a time subsequent to the time at which the time-series signal has been acquired. The feature vector converter converts the feature vector to a prediction signal associated with the patient's biological information.