The invention relates to a system for delivering a radiation treatment to a structure (21) within a body. In the system, a plurality of treatments plans is provided, each treatment plan being associated to one of a plurality of predefined possible position (33a; 33b) of the structure (21), which area regularly distributed on at least one predefined surface (32a; 32b). A control unit is configured to determine the position of the structure during the treatment and to select a treatment plan which is associated with a predefined possible position having a smallest distance to the determined position, for controlling the radiation source in response to the detection of the position. Moreover, the invention relates to a computer program for controlling the system and to a planning unit for generating the treatment plans.

A method may include acquiring a first image including a target point and a first reference point, the target point corresponding to at least one part of a subject, the first reference point corresponding to a first marker disposed on the couch of the medical device; determining a first spatial position of the first marker, the first spatial position corresponding to a first working position of the couch; determining a first spatial position of the at least one part of the subject based on the first image and the first spatial position of the first marker; determining a second spatial position of the first marker, the second spatial position corresponding to a second working position of the couch; determining a second spatial position of the at least one part of the subject based on the second spatial position of the first marker and the first spatial position of the at least one part of the subject. In some embodiments, the method may further include adjusting the second working position of the couch based on the second spatial position of the at least one part of the subject.

A method and apparatus for position detection, and a radiotherapy system are provided. The radiotherapy system includes: a treatment couch, a positioning apparatus, an optical tracking system and a computer; the positioning apparatus disposed on the treatment couch, and at least one reference point provided on the positioning apparatus; the optical tracking system disposed above the treatment couch and configured to detect relative positioning between a mark point set on a treated part of a patient and the reference point, determine deviation between the relative and reference positions, and send the deviation to the computer. The computer is configured to determine whether to adjust a position of the treatment couch based on the deviation and deviation range. The system provided by the present disclosure avoids the influence of patient movement on the accuracy of treatment, and prevents a treatment beam from damaging normal tissues of the patient.

A system proton treatment system including a proton accelerator structured to generate a proton beam, a plurality of beamline pathways configured to direct the proton beam from the proton accelerator to a corresponding plurality of treatment rooms, a rotatable bending magnet located between the proton accelerator and the plurality of treatment rooms, the rotatable bending magnet being structured to selectively rotate between multiple treatment rooms, and an upright patient positioning mechanism disposed in each of the treatment rooms, the upright patient positioning mechanism being structured to support a patient within a particular treatment room and to rotate the patient between a fixed imaging source and imaging panel.

A method of real-time markerless measurement and calibration of a patient positioning system includes computing a three dimensional point cloud representation of a patient by using a camera to obtain depth points of the patient, where the z-direction corresponds to a direction along the focal length of the camera, demanding a z-limit that corresponds to a lower (z-min) and an upper (z-max) specification, computing a point cloud covariance and a point cloud mean for an optimized principle components analysis to compute a torso topography of the patient, determining a center point of the point cloud as an anchor measurement region and using the camera to determine a distance to the patient to establish an angle between a patient torso and a vector that is perpendicular to the camera, averaging the depth measurements in reference regions and compensating for parallax error in real-time during a calibration measurement or radiotherapy treatment plan.

A positioning system for positioning a body part of a patient for radiotherapy includes a positioning device and a radiation treatment system. The positioning device includes a photosensor disposed on an outer surface of the body part and configured to generate a sensing signal upon sensing a positioning beam. The processing unit is operable in a recording mode and a comparison mode. In the recording mode, the processing unit receives the sensing signal of the photosensor and generates reference positioning information according to the sensing signal. In the comparison mode, the processing unit receives the sensing signal of the photosensor and generates comparison positioning information according to the sensing signal. The processor compares the reference positioning information to the comparison positioning information and outputs a positioning result according to a result of comparison.

A robotic patient positioning assembly including a patient treatment couch, and a robotic arm coupled to the patient treatment couch. The robotic arm is configured to move the patient treatment couch along five rotational degrees of freedom and one substantially vertical, linear degree of freedom.

A magnetic resonance (MR)-radiotherapy (RT) hybrid system for treating a patient is disclosed. The MR-RT hybrid system comprises: an MR imaging (MRI) apparatus comprising bi-planar magnets configured to generate a magnetic field; a radiation source configured to supply a radiation beam to treat the patient; a gantry configured to couple the MR apparatus at a first end and the radiation source so that they can rotate in unison; a treatment support configured to support the patient; a motor configured to move the treatment support; and a controller. The controller comprises a processor and memory having stored thereon instructions, which when executed by the processor, cause the motor to move the treatment support in order to avoid collision between the MRI apparatus and the patient when the MRI apparatus is rotated. A method for positioning the treatment support within the MR-RT hybrid system is also disclosed.

Subject positioning systems and methods are provided. A method may include obtaining first information of at least part of a subject when the subject is located at a preset position, and determining, based on the first information, a first position of each of one or more feature points located on the at least part of the subject. The method may include obtaining, using an imaging device, second information of the at least part of the subject when the subject is located at a candidate position. The method may further include determining, based on the second information, a second position of each of the one or more feature points, a first distance between the first position and the second position for each feature point of the one or more feature points, and a target position of the subject based at least in part on the one or more first distances.

The patient transport system has a mobile patient transport device for docking at a medical device, an acquisition device for acquiring suitable information for docking, and a control device for docking control of the mobile patient transport device. An evaluation device is coupled to the acquisition device and used the information acquired by the acquisition device to establish a path of the patient transport device. An optical or acoustic designation device specifies the established path of the patient transport device by at least one optical marking and/or acoustic signals. The optical marking and/or the acoustic signals are detected and control information is derived therefrom.