105 results about "Radiotherapy unit" patented technology

A radio-therapy apparatus includes a radiation head configured to irradiate a therapeutic radiation, and an image processing section configured to generate an image of a diseased portion of a specimen from a result of detection of the diseased portion while tracking the diseased portion to which the therapeutic radiation is irradiated from the radiation head. A control section controls the radiation head and the image processing section such that a period containing the generation of the image and the irradiation of the therapeutic radiation is repeated and the detection of the diseased portion in a next period is started prior to an end of a current period. A recording section records the image of the diseased portion generated by the image processing section in order.

Methods and devices are for providing the delivery of radioactive therapeutics to a cervix using a split ring applicator. The split ring applicator includes a central tandem and a plurality of adjustable split ring tubes that are adjustable laterally in relation to a cervical axis. A radiation dosage is deliverable to a cervical wall by at least one of the plurality of adjustable split ring tubes.

The invention described herein solves the problem of keeping the target-to-skin dose ratio high while simplifying the complex structure of the source and the radiation beams; thus, lowering the cost of the radiotherapy device. Taught are radiotherapy devices for treating a patient having a treatment volume comprising a drum with a first axis of rotation and a housing for a radiation source with a second axis of rotation, the first axis of rotation and a second axis of rotation intersecting at various angles at a focus point (O).

A radiotherapeutic device has a radiotherapeutic irradiation unit with a radiation source for generation of radiotherapeutic radiation and a beam guidance and/or beam shaping device in order to direct the radiotherapeutic radiation in a defined manner onto a specific irradiation region. The radiotherapeutic device additionally has an imaging unit that includes a radionuclide emission tomography acquisition unit and a computed tomography scanner. The radiotherapeutic device also has a support device with a positioning device in order to position the support device in an image acquisition position in which a body region to be irradiated of a patient borne on or in the support device is located in an acquisition region of the image acquisition unit, or in order to position the support device in an irradiation position in which the body region to be irradiated of the patient is at least partially located in congruence with the irradiation region of the irradiation unit. The radiotherapeutic device additionally has a coordinate registration device that registers changes of all position coordinates of the support device given a movement of the support device between the image acquisition position and the irradiation position.

A system to monitor a geometry of a treatment apparatus, an apparatus, a trackable assembly, program product, and methods are provided. The system includes a treatment apparatus having a radiation emitter, a rotating assembly controlled by a controller, and an application computer, which provides treatment delivery instructions to the controller. The system can also include a trackable assembly connected to the rotating assembly and having a fixedly connected first trackable body which functions as a reference fixture and a pivotally connected second trackable body which provides data used to determine a rotation angle of the rotating assembly. The system also includes an apparatus to track a trackable body which has a trackable body detector to detect a position of the indicators carried by the first and the second trackable bodies and a determiner to determine and verify the location of the origin of an isocenter coordinate system and to determine rotational path data about the rotating assembly.

A therapeutic apparatus (500, 600) comprising a radiotherapy apparatus (502) for treating a target zone (318, 536) and a magnetic resonance imaging system (510, 532, 44, 602) for acquiring magnetic resonance imaging data (624). The radiotherapy apparatus comprises a radiotherapy source (300, 302, 304, 504) for directing electromagnetic radiation (310, 312, 314, 508) into the target zone. The radiotherapy apparatus is adapted for rotating the radiotherapy source at least partially around the magnetic resonance magnet. The magnetic resonance imaging system further comprises a radio-frequency transceiver (532) adapted for simultaneously acquiring the magnetic resonance data from at least two transmit-and-receive channels (528, 530). The therapeutic apparatus further comprises a processor (614) and a memory (620) containing machine executable instructions (636, 638, 640, 642, 644) for the processor. Execution of the instructions causes the processor to: calibrate (100, 200) the transmit-and-receive channels; acquire (102, 202) the magnetic resonance data; reconstruct (104, 204) a magnetic resonance image (626); register (106, 206) a location (628) of the target zone in the image; and generate (108, 208) radiotherapy control signals (630) using the registered image.

An imaging device, or a PET device, opposed gamma camera type PET device, or open PET device in particular, that is combined with a radiation therapy device, in which detectors are rotated to reduce incidence of nuclear fragments on the detectors. For example, in an opposed gamma camera type PET device, beam irradiation and detector rotation can be synchronized to prevent the detectors from interfering with the treatment beam and reduce the incidence of nuclear fragments on the detectors. This makes it possible to reduce the incidence of nuclear fragments on the detectors without interfering with a treatment beam, thereby enabling measurement of annihilation radiations and three-dimensional imaging of the irradiation field immediately after irradiation or during irradiation.

An interstitial brachytherapy apparatus and methods for treating proliferative tissue disorders with radiation and a surface delivered treatment agent. The brachytherapy device includes an insertion member having proximal and distal portions and at least one lumen extending therethrough. An expandable surface member is mated to the distal portion of the insertion member and includes a treatment agent releasably mated thereon. When the brachytherapy device is positioned within a tissue cavity and the expandable surface member is expanded, at least a portion of the treatment agent is delivered to tissue surrounding the tissue cavity.

A radiation therapy apparatus has a multi-leaf collimator device having a pair of collimator components which respectively comprise a plurality of leaves arranged close to one another such that the leaves face one another across an irradiation axis, and configured to set a desired irradiation field by individually moving the leaves. One of the collimator components is arranged with an offset with respect to the other collimator component, within a range of a leaf-width.

The invention discloses a miniaturized flash radiotherapy device. The device comprises a grid-control electron gun, a normal-temperature radio-frequency linear accelerator, a time domain synthesis radio-frequency power source, an X-ray target and a collimator; the grid-control electron gun transmits the electron beam to the normal-temperature radio-frequency linear accelerator through a first transmission line; the time domain synthesis radio-frequency power source provides microwaves for the normal-temperature radio-frequency linear accelerator; the normal-temperature radio-frequency linear accelerator transmits electron beams to the X-ray target through the second transmission line; and the electron beams bombard the X-ray target to generate X-rays, and the X-rays irradiate the target through the collimator. According to the miniaturized flash radiotherapy device, long macro-pulse high-dose-rate X-rays can be provided, a very high irradiation dose is given to a target area in a shorttime, the requirement of flash radiotherapy is met, and a better radiotherapy effect is achieved.

The invention discloses a flash radiotherapy device. The device comprises a direct-current photocathode electron gun, a superconducting linear accelerator, an X-ray target and a collimator, wherein the direct-current photocathode electron gun transmits electron beams to the superconducting linear accelerator through the first transmission line; the superconducting linear accelerator transmits theelectron beams to the X-ray target through the second transmission line; and the electron beams bombard the X-ray target to generate X-rays, and the X-rays irradiate the target through the collimator.According to the flash radiotherapy device, the direct-current photocathode electron gun and the superconducting linear accelerator are adopted, long-macro-pulse high-dose-rate X rays can be provided, a very high irradiation dose can be given to a target area in a short time, and the requirement of flash radiotherapy is met. And the energy of the ray can be adjusted by adjusting the energy of theelectron beam, the time length of the ray is adjusted by adjusting the pulse length of the electron beam, and the dosage rate is adjusted by adjusting the flow intensity of the electron beam, so thata better radiotherapy effect on the target is achieved.

Calibration of a radiation therapy system comprising a radiation unit with a fixed focus point, a fixation unit for fixing a treatment volume in a patient, and a positioning system. The positioning system comprises a fixed framework, a movable carriage for carrying and moving the entire patient, motor(s), a control system for controlling the motor(s), and at least one engagement point for releasably mounting the fixation unit in fixed engagement with the positioning system. A fixation unit coordinate system defined in relation to the fixation unit is provided. Linearity errors for the motional axes of the carriage and the angular offset between the motional axes and the coordinate system is determined, whereby the relationships between the axes of the coordinate system and the motional axes of the positioning system are determined. The positioning system is then mounted in fixed relationship with the radiation therapy unit and the focus point in relation to the positioning system is determined, whereby the relationship between the focus point and the coordinate system is also determined.

The present invention relates to an apparatus and to a method for comparing and evaluating therapy plan received from heterogeneous radiation therapy apparatuses. An apparatus according to an embodiment of the present invention includes a receiving means, a processing means, and a display means. The receiving means receives the patient's first radiation therapy plan data, which is generated by a first radiation therapy apparatus, and also receives the patient's second radiation therapy plan data, which is generated by a second radiation therapy apparatus. The processing means processes the first and second radiation therapy plan data to generate mixed data overlaid onto the medical image of the patient. According to a configuration of the present invention, trial and error during radiation treatment may be minimized.

The invention relates to a patient-positioning device for positioning a patient in an irradiation position in a radiation therapy arrangement, in particular in a particle radiation therapy arrangement comprising a patient supporting module, which is provided with a patient supporting device for holding the patient in a body holder where the irradiation is to be carried out, wherein, said patient supporting device is mounted on a base unit in such a way that it is rotatable about an axis by means of a bearing, said base unit is provided with a coupling element, the inventive device is also provided with a positioning arm, which comprises several joints and a coupling point for coupling the coupling element and for freely positioning the patient in any predefined irradiation position by adjusting the angle of rotation of the patient supporting module.

A radiation diaphragm apparatus, which is adapted to form a radiation field which is an exposed area of an object to be examined to radiation from a radiation source, comprises a plurality of diaphragm elements which are closely arranged in a first direction and movable along a second direction substantially normal to the first direction and each of which has a hole of a given shape formed to penetrate through it in the first direction, a shaft penetrating through the hole of each of the diaphragm elements, and a wear-resistant surface member coating the shaft. The shaft supports each of the diaphragm elements at a point of contact with the periphery of the hole. The diaphragm elements moves along the second direction with support by the shaft.

The present invention relates to the field of radiation therapy. In particular, the invention concerns a method of calibrating a positioning system in a radiation therapy system comprising a radiation therapy unit having a fixed radiation focus point. The method comprises the steps of: —releasably attaching a calibration tool to the fixation arrangement; —performing an image scanning procedure with the imaging system; —determining a position of the calibration tool in a coordinate system related to the imaging system; and —calculating a position difference between the determined position of the calibration tool in the coordinate system related to the imaging system and a position of the calibration tool in the stereotactic fixation unit coordinate system, thereby determining a relationship between the coordinate system related to the imaging system and the position of the calibration tool in the stereotactic fixation unit coordinate system.