A three-dimensional model for a patient fixation device that serves to immobilize at least a portion of a particular patient when capturing CT image information of that patient is accessed and then registered with the pixels that correspond to the patient fixation device in the CT image. The model can specify rules of movement for each of a plurality of structural elements that comprise the patient fixation device and that are capable of movement relative to one another. By one approach the aforementioned registration occurs on a part-by-part basis for each of the structural elements. Following registration, the CT image can be automatically segmented.

A method for forming a preform for a thermoplastic retention device is provided. The method includes providing a thermoplastic base material and blending the base material with one or more chemical agents to form a polymer blend. The chemical agents are configured to modify a polymer chain of the base material when the polymer blend is exposed to radiation. The method further includes forming the polymer blend into a filament sized for a three-dimensional printing platform and printing a preform shape from the filament using the three-dimensional printing platform. After the printed preform is hardened, the method includes exposing the printed preform shape to radiation sufficient to cause a reaction between the one or more chemical agents and the base material.

A mask positioning assembly is provided. The mask positioning assembly includes a cradle frame, an adapter frame, and a positioning mask. The cradle frame is connected to both the adapter frame and the positioning mask. The adapter frame can be configured to be connected to any of positioning assembly support frames in different types of positioning systems. A positioning system is also provided.

Systems for immobilizing a patient are disclosed. The system includes at least one preform formed from a low melting temperature thermoplastic, so that the preform may be formed to the anatomy of the patient, at least one frame coupled to the at least one preform, and at least one support to support the anatomy of the patient. The system also includes at least one lock mechanism coupled to at least one of the frame and the support in order to couple the at least one frame to the at least one support, and at least one adjuster mechanism coupled to at least one of the at least one frame and the at least one support in order to selectively adjust a distance between the at least one frame and the at least one support while the at least one frame is coupled to the at least one support.

Systems and methods are provided for modelling and fabricating a patient-specific immobilization support. Image data is obtained for characterizing an exposed surface of a body portion and a support structure employed to support the body portion during imaging. The image data is processed to determine a position and orientation of the support structure based on spatial features of the support structure, and surface data associated with the exposed surface of the body portion is segmented from the image data. The segmented surface data and the position and orientation of the support structure are employed to generate a digital model of a patient-specific immobilization structure that is attachable to the support structure for immobilizing the body portion between the patient-specific immobilization structure and the support structure. Prior to fabricating the patient-specific immobilization structure, an initial digital model may be modified, optionally according to beam parameters associated with a treatment plan.

The present invention relates to a head immobilization system for immobilizing a patient's head in a supine position of the patient, the system comprising: a support rail structure adapted to be coupled to a patient rest and extending at least on both lateral sides of the patient's head, a mask frame adapted to be coupled to at least one deformable upper mask sheet, wherein the mask frame is releasably connected to the support rail structure via a first interface section and a second interface section, with at least two pins protruding from the first interface section in a first direction, and at least two pin-receptions provided at the second interface section, wherein each one of the pin-receptions receives one of the pins, and a catch-mechanism for each pin-reception and each corresponding pin, which allows the pin to be pushed further into the pin-reception in the first direction, but which interlocks in case of an attempted withdrawal of the pin from the pin-reception in a second, opposite direction.

The present invention relates to a heart tissue ablation device comprising a charged particle emitting system 1, a control system 2 for instructing the accelerator and beamline when to create the beam and what its required properties should be, a patient positioning and verification system, an ultrasound cardiac imaging system 3 performed on the patient, able to track the target movement, a computer program to determine and record the safe motion margins, the treatment plans for one or more motion phases and a computer program to regulate the control system 2 to load the correct irradiation plan according to the motion phase and if the position of the target is inside of the position margin, the irradiation is enabled and if the position of the target is outside of the position margin, the irradiation is disabled.

Systems and methods can include a system for positioning an ultrasound probe proximal to anatomy of a patient on a radiation couch including a substantially planar base including engagement features to directly or indirectly index the substantially planar base to the radiation couch and a centrally located guide extending longitudinally along a top side of the base, a probe holder, configured to be coupled to, to translate longitudinally, and to be user-accessed and user-controlled from within, a central region of the substantially planar base, a clamp, configured to localize the probe holder at a specified location along a translation path in the central region of the substantially planar base, leg supports shaped to accommodate a patient's legs from behind, the pair of leg supports being shaped and arranged to provide a space therebetween that can accommodate an ultrasound probe holder.

The present invention describes a dosimetry system for use in an irradiation system for radiology or radiotherapy. The dosimetry system comprises an at least two dimensional, radioluminescent, irradiation detection surface comprising radiosensitive material, the radiosensitive material having radioluminescent properties. The system also comprises a detection system configured for detecting radioluminescent radiation from the at least two-dimensional detection surface upon irradiation with a radiology or radiotherapy irradiating beam. The detection system comprises a detector sensitive for radioluminescence and a filter for at least partially blocking radiation from said radiology or radiotherapy irradiating beam and ambient light.

A brassiere for radiation therapy is disclosed. The brassiere for radiation therapy according to an embodiment of the present disclosure includes a pair of cups configured to cover breasts of a patient; a coupling member positioned between the pair of cups and configured to couple the pair of cups to each other; back bands configured to be in close contact with a back of the patient; and side compression bands, the side compression bands having one ends coupled to the pair of cups at the coupling member, respectively, and the other ends detachably coupled to the back bands, respectively, wherein positions of the breasts of the patient are changed by adjusting positions on the back bands to which the other ends of side compression bands are coupled. According to the embodiment of the present disclosure, it is possible to provide a brassiere for radiation therapy that is capable of compressing the breasts of the patient enough to flatten irregularities of breast skin tissue without excessively compressing a chest of the patient, and of isolating a contra-lateral intact breast to prevent a radiation dose from being transmitted to the contra-lateral intact breast.