91 results about "Radiotherapy unit" patented technology

Techniques for adjusting radiotherapy treatment for a patient in real time are provided. The techniques include operations comprising: obtaining, during delivery of a radiotherapy treatment fraction to a patient, one or more images of the patient at a first rate; generating patient motion information at a second rate based on the one or more images obtained at the first rate; receiving, during delivery of the radiotherapy treatment fraction, radiotherapy treatment device settings at a third rate; computing, during delivery of the radiotherapy treatment fraction, dose delivered to the patient with a first level of accuracy based on the generated patient motion information and the radiotherapy treatment device settings; and determining, during delivery of the radiotherapy treatment fraction, a real-time measure of accumulated dose delivered to the patient with a second greater level of accuracy than the first level of accuracy using one or more prior dose computations.

A method of controlling a radiotherapy device, a computer readable medium and a radiotherapy device are disclosed. The radiotherapy device includes a radiation source coupled to a rotation means. The method includes applying radiation to a subject using the radiation source and rotating the radiation source around the subject using the rotation means according to a first fixed rotation scheme. The method further includes, during execution of the first fixed rotation scheme, determining that the subject is in a suboptimal position, pausing application of the radiation by the radiation source and logging a first angle of rotation of the radiation source at which application of the radiation is paused.

A controller (600) for a radiotherapy device (320) is provided; the radiotherapy device (320) being configured to provide therapeutic radiation to a patient (308) via a source (300) of therapeutic radiation, wherein the radiotherapy device (320) comprises a first rotatable member (304), the rotation of which can alter a physical attribute of the therapeutic radiation provided, and a patient support member (310), which is linearly moveable in at least one of a longitudinal direction and a lateral direction. The controller (600) comprises a first rotatable actuator (608) for controlling a movement of the first rotatable member (304) and a second actuator (620) for controlling a movement of the patient support member (310).

The invention discloses a radiotherapy system, an application method and a CT scanning device control method, and belongs to the technical field of medical equipment. The terminal realizes integration of positioning and dynamic treatment through a cooperative control system of the CT scanning device, the patient positioning mechanism and the radiotherapy device. A scanning ring assembly of the CT scanning device supports sitting posture imaging, prone posture imaging and standing posture imaging through a horizontal / vertical displacement and around-axis rotating mechanism. The patient positioning mechanism is integrated with a multi-level telescopic supporting body and a centering adjusting system, pitching, rolling and rotating three-dimensional posture adjustment can be achieved, and the patient positioning mechanism is suitable for lying, standing and inclined body positions. The device breaks through the body position limitation of a traditional radiotherapy device, is suitable for an ion radiotherapy system, can replace a high-cost rotating rack beam system through the combination of the fixed beam treatment head and the multi-body-position patient positioning technology, achieves multi-angle irradiation and arc-shaped treatment while guaranteeing the treatment precision, reduces the equipment complexity and manufacturing cost, and is suitable for popularization and application. And the clinical accessibility of ion radiotherapy is improved.

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.

Provided is a treatment support system capable of easily determining a radiation treatment device desirable for a patient. An arithmetic processing device 101 predicts a treatment effect index for each treatment modality of a radiation treatment device 202 by using a region of interest which corresponds to a part related to the irradiation of a patient with radioactive ray in a three-dimensional fluoroscopic image showing the patient, and also using parameter information which indicates a value of a parameter for the prediction of a treatment effect index for evaluating the effect of a radiation treatment for each treatment modality of the radiation treatment device 202 for performing the radiation treatment.

This radiation therapy device for treating, with radiation, an irradiation target body comprises: a treatment part having a treatment position which is the position at which the irradiation target body is treated; a mounting part on which the irradiation target body is mounted; and a position adjustment part that performs position adjustment of the irradiation target body at the mounting part. The position adjustment part performs position adjustment for adjusting the position of the irradiation target body with respect to a reference position, before the mounting part moves to the treatment position. The mounting part moves to the treatment position after completion of the position adjustment.

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.

To predict at high speed and with accuracy, a time series signal related to biological information of a patient.SOLUTION: A time series signal prediction device has a time series signal acquisition part, a block conversion part, a feature vector acquisition part, and a feature vector conversion part. The time series signal acquisition part acquires a time series signal related to biological information of a patient. The block conversion part divides the time series signal into partial signals for each prescribed interval, for converting the time series signal into a block signal having a shorter time series than the time series of the time series signal. The feature vector acquisition part outputs a feature vector which indicates a time series signal in the future time relative to an acquisition time point of the time series signal, from the block signal. The feature vector conversion part converts the feature vector into a prediction signal related to the biological information of the patient.SELECTED DRAWING: Figure 2

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 method for evaluating contour display accuracy for radiotherapy, the method comprising obtaining, by a control device, a through plane distorted MR image comprising a representation of a phantom disposed on a patient support surface of a radiotherapy device and determining a difference between the representation of the phantom and a reference contour of the phantom. Also disclosed is a phantom 500 for use in evaluating contour display accuracy comprising an outer surface tapered along at least one axis of the phantom between a base and a tapered end, and a fixation mechanism 510 configured to fix the phantom on a patient support surface 114 of a radiotherapy device such that the tapered end is selectively alignable at different respective times with each of three perpendicular axes of the radiotherapy device.

This invention provides a digital twin-based radiotherapy transport system and radiotherapy method, including a proton radiotherapy site, a proton radiotherapy device, a sensor system, a digital twin model, a data monitoring system, and an operating system. The proton radiotherapy site includes at least one treatment room, multiple medical preparation rooms, and a medical operation room. The proton radiotherapy device includes transport equipment and a proton therapy system. The sensor system includes multiple sensors. The digital twin model is used to convert the physical model of the proton radiotherapy site and the proton radiotherapy device, along with the sensors, into a digital twin. The data monitoring system reflects the deviation between the digital twin and the actual proton radiotherapy device. The operating system controls the operation of the transport equipment. This invention optimizes the proton radiotherapy process, achieving stable and high-precision patient transport and treatment using high-precision sensors combined with a digital twin model, and improving treatment efficiency through a multi-room transport system.

A method of determining whether repair or replacement of a radiotherapy device thyratron should be scheduled where the device comprises a linear accelerator for providing therapeutic radiation to a pa