The invention relates to a marker body (10) for marking breast tissue for radiotherapy. The marker body (10) has an at least partly tube-like body (12) which is made from a soft elastic material and carries multiple radio-opaque marker elements (18). The at least partly tube-like body (12) is designed so that it offers hardly any resistance to an external, deforming force, but returns to its original shape in the absence of external forces. The at least partly tube-like body (12) has two free longitudinal ends (14, 16) which can be detachably interconnected or are interconnected, resulting in a tubular ring.

In a radiation therapy system, treatment X-rays are delivered to a target volume at the same time that imaging X-rays are also delivered to the target volume for generating image data of the target volume. That is, during an imaging interval in which imaging X-rays are delivered to the target volume, one or more pulses of treatment X-rays are also delivered to the target volume. In each pixel of an X-ray imaging device of the radiation therapy system, image signal is accumulated during portions of the imaging interval in which only imaging X-rays are delivered to the target volume and is prevented from accumulating in each pixel during the pulses of treatment X-rays.

A device and methods for performing a simulated CT biopsy on a region of interest on a patient. The device comprises a gantry (22) configured to mount an x-ray emitter (24) and CT detector (26) on opposing sides of the gantry, a motor (28) rotatably coupled to the gantry such that the gantry rotates horizontally about the region of interest, and a high resolution x-ray detector (172) positioned adjacent the CT detector in between the CT detector and the x-ray emitter.

A radiotherapy device control apparatus instructs a radiotherapy device to execute instruction information based on a treatment regimen determined in advance, controls the operations of an irradiation-related instrument provided in the radiotherapy device on the basis of irradiation conditions included in the instruction information, determines whether irradiation is permitted on the basis of results detected by an irradiation target detection unit that detects movement of a target to be irradiated, controls execution and interruption of therapeutic irradiation on the basis of the determined result, stores the history of interruption of irradiation according to the determination by the irradiation permission determination unit, and causes the instrument to run the operations based on the instruction information to completion, regardless of whether irradiation has been interrupted during execution of the instruction information.

Disclosed is a computer-implemented method for determining a position of an anatomical tracking structure in a tracking image usable for controlling a radiation treatment such as at least one of radiotherapy or radio surgery of a patient, a corresponding computer program, a non-transitory program storage medium storing such a program and a computer for executing the program, as well as a system for the position of an anatomical tracking structure in a tracking image usable for controlling a radiation treatment such as at least one of radiotherapy or radio surgery of a patient, a system comprising an electronic data storage device and the aforementioned computer.

A radiotherapy system includes X-ray imaging apparatuses that obtain an X-ray image of the patient on a reference plane, and a position determination apparatus. The position determination apparatus calculates parameters of a region estimation model, using, as input data, a reference fluoroscopic image obtained before radiotherapy, and also using, as teacher data, a reference ROI image obtained with respect to the reference fluoroscopic image before radiotherapy. During radiotherapy, the position determination apparatus estimates a region of interest with respect to the X-ray image and a DRR image, based on the parameters and the X-ray image, determines a degree of matching between the X-ray image and the DRR image for the region of interest while virtually changing a relative position/orientation relationship between a CT image and the reference plane, and determines an amount of deviation in position/orientation between the patient and the CT image.

Methods and systems are disclosed for radiating a moving object. The method may comprise acquiring a plurality of indicators of the phase of a physiological cycle of a patient and a plurality of images of the patient that include a target. Each image may be taken at a different phase of the physiological cycle and may be registered to the phase at which the image was taken. The method may also include identifying the target in each of the plurality of images, calculating a dose of radiation required to treat the target, calculating the number, orientation, and dwell time of one or more radiation beams required to deliver the calculated required dose of radiation to the target, and calculating a position of each of the one or more radiation beams required to achieve the calculated orientation. Each position may be a function of the phase of the physiological cycle to which each of the plurality of images is registered.

An example particle therapy system includes a toroid-shaped gantry having a central axis. The toroid-shaped gantry has a cover. The cover includes one or more segments that are rotatable at least partly around the central axis of the toroid-shaped gantry to create an unobstructed opening in the toroid-shaped gantry. The particle therapy system includes a patient couch configured to move relative to a hole in the toroid-shaped gantry, an imaging system coupled to an interior of the toroid-shaped gantry and configured for rotation about the hole in the toroid-shaped gantry, where the imaging system is configured to capture images of a patient on the patient couch, and a nozzle coupled to the interior of the toroid-shaped gantry and configured for rotation about the hole in the toroid-shaped gantry. The nozzle is configured to deliver radiation to a target in the patient based on one or more of the images.

The present invention relates to a medical data processing method of determining the representation of an anatomical body part (2) of a patient (1) in a sequence of medical images, the anatomical body part (2) being subject to a vital movement of the patient (1), the method being constituted to be executed by a computer and comprising the following steps: a) acquiring advance medical image data comprising a time-related advance medical image comprising a representation of the anatomical body part (2) in a specific movement phase; b) acquiring current medical image data describing a sequence of current medical images, wherein the sequence comprises a specific current medical image comprising a representation of the anatomical body part (2) in the specific movement phase, and a tracking current medical image which is different from the specific current medical image and comprises a representation of the anatomical body part (2) in a tracking movement phase which is different from the specific movement phase; c) determining, based on the advance medical image data and the current medical image data, specific image subset data describing a specific image subset of the specific current medical image, the specific image subset comprising the representation of the anatomical body part (2); d) determining, based on the current medical image data and the image subset data, subset tracking data describing a tracked image subset in the tracking current medical image, the tracked image subset comprising the representation of the anatomical body part (2).

Disclosed herein is a method of positioning a patient for radio-therapy treatment using a radiotherapy device. The method comprises determining an identity of a treatment beam that is to be used to treat the patient, determining an offset between a reference location and an isocentre location for the identified treatment beam that is to be used to treat the patient, and changing a spatial relationship between the patient and at least a part of the radiotherapy device, according to the determined offset.