A computer-implemented method of performing a treatment fraction of radiation therapy comprises: determining a current position of a target volume of patient anatomy; based on the current position of the target volume, computing an accumulated dose for non-target tissue proximate the target volume; determining that the accumulated dose is less than a current value for a dose budget of the non-target tissue; and in response to the accumulated dose being less than the current value for the dose budget, applying a treatment beam to the target volume while the target volume is in the current position.

Disclosed are devices and methods for measuring lung respiration volume including processor means for receiving a detected series of heart beats, measuring variability between a period of successive beats, identifying the start and finish of successive breaths by the maxima and minima in the period, identifying the amplitude of variability of period between successive breaths, and thereby determining a value for a measurement of an extent of lung respiration, and output means for generating the value for the measurement of the extent of lung respiration. The disclosed devices and methods have applications in different medical fields. The disclosed devices can be utilised as wearable devices, wherein the signals are generated and may be processed remotely or locally.

An apparatus for use in a treatment planning process or in a treatment process, includes: an input for obtaining a parameter representing a number of beam on-off transitions; and a treatment planner configured to optimize a treatment plan based on parameter representing the number of beam on-off transitions. An apparatus includes: an input configured to obtain a width of a gating window for a treatment plan; and a gating window adjustor configured to adjust the width of the gating window during a treatment session. An apparatus includes: a dose calculator configured to calculate doses for different treatment variations; an evaluator configured to evaluate treatment acceptance criteria against the calculated doses; and a delivery limit module configured to determine one or more limits for one or more delivery parameters based on an evaluation of the treatment acceptance criteria by the evaluator.

Apparatus for performing a procedure at a target site of a patient's body, the apparatus comprising: a continuous positive airway pressure (CPAP) apparatus that provides CPAP to the patient's lungs; a medical device for performing the procedure at the target site; and a controller that controls the CPAP apparatus to provide CPAP to the patient's lungs during performance of the procedure.

Described herein are methods for beam station delivery of radiation treatment, where the patient platform is moved to a series of discrete patient platform locations or beam stations that are determined during treatment planning, stopped at each of these locations while the radiation source rotates about the patient delivering radiation to the target regions that intersect the radiation beam path, and then moving to the next location after the prescribed dose of radiation (e.g., in accordance with a calculated fluence map) for that location has been delivered to the patient.

A camera assembly (3) for use in medical tracking applications, comprising a range camera (4) and a thermographic camera (5) in a fixed relative position.

A radiation latency measurement system, having a pulse detector connected to a radiation detector mounted within a phantom that is configured to be positioned within a radiation treatment system which delivers a radiation dose to the radiation detector. The pulse detector has a first circuit that applies a high voltage bias to the radiation detector and a second circuit that amplifies the voltage signal from the radiation detector with a fixed gain first amplification stage and a variable gain second amplification stage. A first comparator receives the amplified signal and generates an output signal when the amplified signal exceeds a specified voltage level and a second comparator that processes and filters the output signal. The timing of receipt of the radiation dose signal may be compared to the position of the radiation detector in order to measure a radiation dose latency of the radiation treatment system.

A radiation therapy apparatus of an embodiment allows radiation to be applied while rotating a gantry and controls irradiation and stop of the radiation during the rotation of the gantry based on respiration of a treatment subject, and includes processing circuitry. The processing circuitry detects the respiration of the treatment subject. The processing circuitry predicts an administration dose based on a respiratory phase range in which the radiation is applied in the respiration of the treatment subject, and changes at least one or both of a dose rate of the radiation to be applied to the treatment subject and a rotation speed of the gantry so that the administration dose reaches a target dose. The processing circuitry performs control according to the change with respect to at least one or both of the dose rate of the radiation and the rotation speed of the gantry.

A radiation system is provided. The radiation system may include a bore accommodating an object, a rotary ring, a first radiation source and a second radiation source mounted on the rotary ring and a processor. The first radiation source may be configured to emit a first cone beam toward a first region of the object. The second radiation source may be configured to emit a second beam toward a second region of the object, the second region including at least a part of the first region. The processor may be configured to obtain a treatment plan of the object, the treatment plan including parameters associated with radiation segments. The processor may be further configured to control an emission of the first cone beam and/or the second beam based on the parameters associated with the radiation segments to perform a treatment and a 3-D imaging simultaneously.

A respiratory gating phantom device includes a first airbag, a second airbag, a first catheter, a second catheter, a fixture, and an air pressure gating device. The first catheter and the second catheter are respectively installed in the first airbag and the second airbag. The fixture is provided with a phantom tumor and adjustably installed in the first catheter or the second catheter, thereby installing the phantom tumor in the first catheter or the second catheter. The air pressure gating device, connected to the first airbag and the second airbag, inflates and deflates the first airbag and the second airbag to simulate breathing. The first catheter and the second catheter respectively move along three-dimensional direction and two-dimensional direction in response to motions of the first airbag and the second airbag.