Abstract: A system for radiotherapy includes a couch having a top lateral surface upon which a patient being treated by the system is positioned. The couch has continuous arc rotation for delivery of accelerated irradiation to the patient. The couch is movable rotationally and translationally. Delivery of the accelerated irradiation is performed during at least a portion of the movement.

Abstract: A system for radiotherapy that includes a couch upon which a patient being treated by the system is positioned, the couch having continuous arc rotation for delivery accelerated irradiation to the patient.

Abstract: A system for radiotherapy that includes a couch upon which a patient being treated by the system is positioned, the couch having continuous arc rotation for delivery accelerated irradiation to the patient.

Abstract: A breathing system for hyperthermic assisted radiation therapy includes at least one heating element that modulates the temperature of air inhaled by a patient, at least one cooling element that modulates the humidity of the air inhaled by a patient, and a controller that maintains the desired humidity and temperature.

Abstract: A cradle for positioning an anatomical portion of a patient during treatment includes a plurality of expandable fluid chambers and a pressure regulator configured to supply fluid to and withdraw fluid from each of the fluid chambers. A system for positioning an anatomical portion of a patient during treatment includes the aforementioned cradle and a control unit configured to control the pressure of each of the fluid chambers. A method for positioning an anatomical portion of a patient during treatment comprises the steps of placing the anatomical portion in the aforementioned cradle and adjusting the pressure of each of the fluid chambers to hold the anatomical portion in a desired position.

Abstract: A tetrahedron beam computed tomography system including an x ray source array that sequentially emits a plurality of x ray beams at different positions along a scanning direction and a collimator that intercepts the plurality of x-ray beams so that a plurality of fan-shaped x-ray beams emanate from the collimator towards an object. The system includes a first detector receiving a first set of fan-shaped x ray beams after they pass through the object, the first detector generating a first imaging signal for each of the received first set of fan-shaped x-ray beams and a second detector receiving a second set of fan-shaped x ray beams after they pass through the object, the second detector generating a second imaging signal for each of the received second set of fan-shaped x-ray beams. Each detector and source pair form a tetrahedral volume. In other embodiments, the system may also have more than two detectors arrays and/or more than one source array.

Abstract: A system for radiotherapy includes a first imaging system and a second imaging system. The first imaging system generates projection images of an area of interest of an object, and the second imaging system generates portal images of the area of interest of the object synchronously with the generation of the projection images. The radiotherapy system further includes a processing system that receives data associated with the projection images and data associated with the portal images and reconstructs 3D and 4D portal images from the projection images and the portal images.

Abstract: A system for radiotherapy that includes a couch upon which a patient being treated by the system is positioned, the couch having continuous arc rotation for delivery accelerated irradiation to the patient.

Abstract: A system for radiotherapy includes a first imaging system and a second imaging system. The first imaging system generates projection images of an area of interest of an object, and the second imaging system generates portal images of the area of interest of the object synchronously with the generation of the projection images. The radiotherapy system further includes a processing system that receives data associated with the projection images and data associated with the portal images and reconstructs 3D and 4D portal images from the projection images and the portal images.

Abstract: A cradle for supporting an anatomical portion of a patient during radiotherapy includes a plurality of air chambers and at least one pressure regulator that adjusts the pressure in each air chamber. The cradle may be connected to an electronic control unit that sends instructions to the at least one pressure regulator to pressure each air chamber to a desired pressure.

Abstract: A breathing system for hyperthermic assisted radiation therapy includes at least one heating element that modulates the temperature of air inhaled by a patient, at least one cooling element that modulates the humidity of the air inhaled by a patient, and a controller that maintains the desired humidity and temperature.

Abstract: A system for radiotherapy includes a first imaging system and a second imaging system. The first imaging system generates projection images of an area of interest of an object, and the second imaging system generates portal images of the area of interest of the object synchronously with the generation of the projection images. The radiotherapy system further includes a processing system that receives data associated with the projection images and data associated with the portal images and reconstructs 3D and 4D portal images from the projection images and the portal images.

Abstract: A method of treating an object with radiation that includes generating volumetric image data of an area of interest of an object and emitting a therapeutic radiation beam towards the area of interest of the object in accordance with a reference plan. The method further includes evaluating the volumetric image data and at least one parameter of the therapeutic radiation beam to provide a real-time, on-line or off-line evaluation and on-line or off-line modification of the reference plan.

Abstract: A radiotherapy apparatus comprises a first collimator and a second collimator, the first collimator being a multi-leaf collimator, the second collimator comprising a plurality of slits having a width which is a fraction of the width of the leaves of the first collimator, the first and second collimators being aligned such that each slit of the second collimator is associated with a leaf of the first collimator. A first irradiation is made, during which the first collimator will define the outer edge of the irradiation pattern, and the second collimator will serve to narrow the effective width of each leaf of the first collimator. This narrowing is a simple function of the relative widths of the slits of the second collimator and the leaves of the first. This will leave gaps in between the slits of the second collimator, which can then be filled by moving one or more of the patient, first and second collimators, so as to irradiate an area omitted in the first irradiation.