The invention comprises an alignment guide apparatus and a method of use thereof for aligning an imaging beam, longitudinally passing through an exit nozzle of an imaging system, to an imaging zone of a sample, includes the steps of: (1) providing an alignment guide, the alignment guide comprising: (a) a guide wall at least partially circumferentially enclosing an aperture, (b) a first laser element connected to the guide wall, and (c) a second laser element connected to the guide wall; (2) inserting the exit nozzle of the imaging system into the aperture; (3) projecting a first line from the first laser element onto the sample; (4) projecting a second line from the second laser element onto the sample; and (5) moving the sample relative to the exit nozzle of the imaging system to position an intersection of the first line and the second line at the imaging zone to align the imaging beam to the imaging zone.

A positioning device, a radiotherapy device, and a positioning method enable accurate patient positioning while reducing calculation time. A plurality of X-ray fluoroscopic images are obtained by imaging a subject. For each imaging axis of the X-ray fluoroscopic image, a simulated fluoroscopic image obtained by projecting a three-dimensional fluoroscopic image of the subject onto the detection surface with respect to the imaging axis is created. For each of the plurality of imaging axes, the image collation part obtains a correction axis obtained by correcting the imaging axis based on a two-dimensional motion amount, which is a deviation amount between the X-ray fluoroscopic image and the simulated-X-ray fluoroscopic image corresponding to the imaging axis, and calculates, as a treatment-couch motion amount by which the treatment-couch is to be moved, a motion amount from an intersection of the imaging axes to a midpoint of a common perpendicular of the correction axes.

A quality assurance system for a medical accelerator includes a housing, an image plate supported by the housing and an image capture assembly. The image plate is adapted to display a visible light field image and a radiation field generated by the medical accelerator. The image capture assembly is adapted to capture the visible light field image and the radiation field displayed by the image plate.

These teachings provide for accessing stored patient surface information for a given patient and geometry information for a patient support setting. These teachings then provide for generating a patient-position solution that will avoid collisions during a subsequent administration of radiation treatment as a function, at least in part, of that patient service information and the geometry information. That patient-position solution is presented via a user interface in conjunction with conducting at least one simulation scan of the given patient using the patient support setting. To avoid collisions, these teachings will also support an option to modify the treatment plan rather than the patient position using the patient image model shown in the user interface.

Provided is a method for checking consistency between a radiotherapy equipment isocenter and a treatment isocenter, wherein the method includes: acquiring projection data from a detector and generating image data based on the projection data, wherein the image data includes a light spot and a shading located in the light spot, and the light spot and the shading are formed by a radiation beam generated by a treatment head of the radiotherapy equipment and then being blocked by a radiation blocking body; and determining an offset between the radiotherapy equipment isocenter and the treatment isocenter based on the image data. A system and a device for checking consistency between a radiotherapy equipment isocenter and a treatment isocenter are also provided.

A positioning device, a radiotherapy device, and a positioning method enable accurate patient positioning while reducing calculation time. A plurality of X-ray fluoroscopic images are obtained by imaging a patient along each of a plurality of imaging axes in a direction different from a plurality of movement axes along which a treatment couch moves translationally. A plurality of simulated-X-ray fluoroscopic images are obtained by projecting the three-dimensional fluoroscopic image of the patient on each of the plurality of surfaces corresponding to each imaging axis. A similarity calculation unit calculates the similarity between each X-ray fluoroscopic image and each simulated-X-ray fluoroscopic image. Based on the similarity, an optimization calculation processing unit calculates the movement amount of the treatment couch such that each X-ray fluoroscopic image and each simulated-X-ray fluoroscopic image coincide most in each of the plurality of translation directions along each of the plurality of optimization axes.

Systems, devices, and methods are presented for automatic tuning, calibration, and verification of radiation therapy systems comprising control elements configured to control parameters of the radiation therapy systems based on images obtained using electronic portal imaging devices (EPIDs) included in the radiation therapy system.

An X-ray positioning apparatus according to the present invention is provided with an X-ray video device that generates second X-ray image data in which a respiratory signal of a patient and first X-ray image data are related to each other, a positioning computer that generates patient platform control data for controlling a patient platform, and a photographing trigger generation apparatus that outputs a photographing trigger signal to an X-ray tube; the X-ray positioning apparatus is characterized in that the photographing trigger generation apparatus generates the photographing trigger signal, in accordance with a first frame rate and a second frame rate that is higher than the first frame rate, and in that the positioning computer generates the patient platform control data, based on a reference image and one X-ray image selected from consecutively photographed images that are photographed at the second frame rate.

Systems, methods, and apparatuses are provided for radiation treatment with multiple imaging elements. One system includes a first imaging element configured to generate a first observation of a first object, the first observation of the first object being generated at a first time, wherein the first object is associated with a volume of interest (VOI), wherein the VOI is a volume within a body of a patient. The system further includes a second imaging element configured to generate a first observation of a second object, wherein the first observation of the second object is generated at a second time, and the second object is associated with the VOI. The system further includes one or more processors configured to determine a first positioning of the VOI based at least in part on the first observation of the first object and the first observation of the second object, determine a third time for the first imaging element based at least in part on a positioning parameter associated with the first positioning of the VOI, and generate a second observation of the first object at the third time.

Disclosed herein are radiotherapy methods and systems that can display a workflow-oriented graphical user interface(s). A method comprises presenting a plurality of pages for display, each corresponding to a stage of a radiotherapy treatment for a patient; in response to receiving an indication that a surface of a patient is aligned, retrieving, from a radiotherapy file, a first image of an internal target aligned in accordance with treatment attributes; receiving a second image of the internal target; overlaying on a first page of the plurality of pages, the first image and the second image, the first page displaying a direction to position the internal target in the second image to align with the internal target in the first image; and when the internal target is aligned, presenting for display a second page of the plurality of pages corresponding to a subsequent stage of the radiotherapy treatment for the patient.