A data processing method for determining the position of a target, comprising the steps performed by a computer: a) acquiring a target movement model specifying a movement cycle of the target; b) acquiring a target position signal representing a view of the target from a single direction and/or provided by a single imager; c) determining, based on the acquired target position signal and the target movement model, the position of the target.

The invention is directed to a data processing method for determining the consistency of registration of the position of a treatment body part to be treated by radiotherapy with a treatment beam arrangement of at least one position of a treatment beam issued by a treatment device, the treatment body part being a soft tissue part of an anatomical structure of a patient's body and the data processing method being constituted to be executed by a computer and comprising the following steps: g) acquiring CT data comprising predetermined CT information about a position of the treatment body part relative to a bony structure of the patient's body and about a first position of the bony structure relative to the treatment beam arrangement; h) acquiring x-ray data comprising x-ray information about a second position of the bony structure relative to the treatment beam arrangement; i) determining, based on the x-ray data and the CT data, bony structure position first transformation data comprising bony structure position first transformation information about a first transformation between the first position and the second position of the bony structure; j) acquiring CBCT data comprising CBCT information about the position of the treatment body part relative to the treatment beam arrangement or relative to the bony structure; k) determining, based on the CBCT data and the CT data, bony structure position second transformation data comprising bony structure position second transformation information about a second transformation between the first position and a third position of the bony structure relative to the treatment beam arrangement; determining, based on the bony structure position first transformation data and the bony structure position second transformation data, transformation difference data comprising transformation difference information about a difference between the first and second transformations.

Apparatus and techniques are described herein for nuclear magnetic resonance (MR) projection imaging. Such projection imaging may be used to control radiation therapy delivery to a subject, such as including receiving reference imaging information, generating a two-dimensional (2D) projection image using imaging information obtained via nuclear magnetic resonance (MR) imaging, the 2D projection image corresponding to a specified projection direction, the specified projection direction including a path traversing at least a portion of an imaging subject, determining a change between the generated 2D projection image and the reference imaging information, and controlling delivery of the radiation therapy at least in part using the determined change between the obtained 2D projection image and the reference imaging information.

Removable marker implants having fiducial markers disposed on multiple elongate members extend and splay laterally outward when deployed thereby providing improved 3D localization and tracking of a portion of the patient's body for stereotactic radiosurgery. Such an approach is particularly useful for tracking of the uterus during radiosurgery treatment of uterine fibroids. Such implants can include an outer sheath that contains the multiple elongate members during delivery into the portion of the body. The elongate members can be slidably disposed within the shaft and advanced into an expanded deployed position by advancement of an applicator shaft or rod within the sheath. Marker implant can also be integrally formed implants with flexible arms having fiducial markers thereon that can be constrained in a sheath for delivery and resiliently splay laterally outward when released from the shaft. Methods of delivery and deployment are also provided.

A radiotherapy equipment control device acquires reference position information for a specific location at a reference time. Furthermore, representative point reference position information is generated from reference position information for a plurality of markers at the reference time, and relative position information up to the reference position information for the specific location is generated. Moreover, representative point position information at another time is generated from the position information for a plurality of markers in a subject at the other time, which differs from the reference time. In addition, position information for the specific location at the other time is generated from the representative point position information and the relative position information. In this case, representative point reference position information and representative position information are generated on the basis of the position information and reference position information for the plurality of markers, said information having been weighted by weighting factors.

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.

According to one embodiment, A movable part tracking and treatment apparatus, includes: an acquisition unit adapted to acquire a three-dimensional moving image by imaging an inside of a body of a patient; a first projection image generation unit adapted to generate a first projection moving image by projecting the three-dimensional moving image on a two-dimensional surface from a fixed direction, the three-dimensional moving image including a tracing target and an affected part area that are part of internal organs in a displaced state, an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image, a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image, a first parameter derivation unit is adapted to derive a first parameter indicative of position information on a beam irradiation point selected from the displaced affected part area in the first projection moving image, and a second parameter derivation unit adapted to derive a second parameter necessary to extract the corresponding tracing target from another projection moving image based on the tracing target extracted from the first projection moving image.

A method may include obtaining a first acquisition time period related to a scan of a first modality performed on an object. The method may also include obtaining one or more second acquisition time periods related to a scan of a second modality performed on the object. The method may also include obtaining, based on the first acquisition time period and the one or more second acquisition time periods, target data of the object acquired in the scan of the first modality. The method may also include generating one or more target images of the object based on the target data.

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.

A radiation delivery system that includes a gantry to extend along one or more axes. The gantry is to provide a continuous rotation. The radiation delivery system includes a linear accelerator (LINAC) coupled to the gantry. The LINAC is to generate a treatment beam. The radiation delivery system includes a rotary joint coupled to the gantry. The rotary joint provides a physical connection from the LINAC to an external system that is positioned off the gantry. The physical connection is to transport radio frequency (RF) power.