Provided is a bolus formed of a hydrogel, wherein the hydrogel includes water, a polymer, and a mineral, and wherein the bolus is applied to a patient who receives a radiation therapy.

A method for beam therapy is provided. The method includes receiving first data indicating a plurality of target volumes within a target region inside a subject for particle beam therapy relative to a particle beam outlet on a gantry for directing a particle beam from a particle beam source. The method further includes moving automatically, one or more energy modulator components to reduce an energy of the particle beam and deliver the particle beam to the target region such that a Bragg Peak is delivered to at least one target volume of the plurality of target volumes. The method further includes repeating the moving automatically as the particle beam source rotates with the gantry around the subject, without changing the energy of the particle beam at the particle beam outlet, until every target volume is subjected to a Bragg Peak.

Disclosed is a tumor surface dose enhancing radiotherapy apparatus using a magnetic field, including a radiation beam generating unit that irradiates a radiation beam towards a tumor of a patient, a magnetic field generating unit that forms a magnetic field that is parallel to the radiation beam between the radiation beam generating unit and the tumor of the patient, and a control unit that controls a surface dose of the tumor by adjusting an intensity and an effective area of the magnetic field of the magnetic field generating unit.

Methods, apparatuses, systems, and implementations for creating a patient-specific soft bolus for radiotherapy treatment are disclosed. 2D and/or 3D images of a desired radiotherapy treatment site may be acquired, such as the head, neck, skin, breast, anus, and/or vulva. A user may interact with one or more representations of the images via an interactive user interface such as a graphical user interface (GUI). The images may include target/avoidance structures and radiation beam arrangement. The user may interact with the images to create a visualization of a patient-specific bolus. The visualization and properties of the bolus may be modified as the user manipulates aspects of the image. Data corresponding to the bolus models may be used to create 3D printed negative molds of the bolus model using 3D printing technology. A soft patient-specific bolus may be cast using the 3D printed model.

This bolus, which is for radiation therapy, can be deformed to match the shape of a human body surface, and has little deformation during therapy. The bolus forming material is a rubber composition containing ethylene-propylene rubber and a temperature-sensitive material. The bolus forming material has a JIS type A hardness of 20 or higher at 30? C., and thus is not susceptible to deformation. The bolus forming material has a JIS type E hardness of 10 to 60 at 70? C., and thus easily deforms. The bolus forming material shifts the peak of the percentage depth dose for electron beams and X-rays in the beam source direction at 0.8 to 1.2 times the thickness thereof. Therefore, the bolus forming material has dose characteristics in the depth direction that are substantially the same as a human body. After a sheet of the bolus forming material is heated to around 70? C., the sheet deforms.

To provide patient shielding of non-treatment areas bordering a treatment zone of the patient during radiation therapy, a shield device may be located on the patient. The shield device has a plurality of interconnected and overlapping elements, e.g. in a scale maille arrangement, that forms a conformal sheet that can be laid over the shielded portion of the patient, e.g. over the contralateral breast during breast cancer treatment. The edge of the scale maille sheet is substantially configurable and can be made to conform to the field edge of the treatment zone on the patient.

The present disclosure generally relates to a cystic applicator for radiotherapy and a method for determining a thickness of a scattering foil and modulator therein. According to one embodiment, a cystic applicator for radiotherapy may comprise a housing having a hollow cystic structure with an opening, a scattering foil disposed at an opening of the hollow cystic structure and configured to receive first radiation and convert a portion of the first radiation into second radiation while scattering the first radiation, and a modulator disposed inside the hollow cystic structure and configured to modulate an intensity of mixed radiation including the first radiation and the second radiation. It may convert a portion of an electron beam into X-rays, and modulate an intensity of mixed beam of the electron beam and X-rays, form a uniform dose distribution in a region outside the surface of the cystic applicator, and be used for radiotherapy of a cystic tumor which including a spherical cystic shape, a tubular cystic shape or any other cystic tumors.

Provided are a method and apparatus for manufacturing a radiation beam intensity modulator. The method includes: obtaining dose modulation information expressed as a density matrix or three-dimensional (3D) structure information provided from a radiotherapy treatment planning system; obtaining design condition information of a radiation beam intensity modulator provided from the radiotherapy treatment planning system; generating a radiation beam intensity modulator structure based on the design condition information of the radiation beam intensity modulator and the dose modulation information expressed as the density matrix or the 3D structure information; adjusting the radiation beam intensity modulator structure by comparing at least one of an actual manufacturing condition and a treatment condition with the design condition information of the radiation beam intensity modulator; and manufacturing the radiation beam intensity modulator based on the radiation beam intensity modulator structure that is adjusted.

Disclosed herein are systems, methods, and computer-readable storage devices for manufacturing patient-specific bolus for use in targeted radiotherapy treatment. Based on dose calculations without a bolus and based on three-dimensional scan data of a patient, the example system generates a model of a bolus for targeting radiotherapy treatment to a planning target volume or target region within the patient. The system can perform several iterations to generate a resulting model for the bolus. Then, the system can generate instructions for controlling a three-dimensional printer to generate the bolus that conforms to the patient's skin surface while also specifically targeting the planning target volume for the radiotherapy treatment. In this way, the amount of radiotherapy treatment administered to other tissue is reduced, while the costs, time, and human involvement in creating the bolus are significantly reduced.

The present invention relates to a low energy radiation therapy system for superficial lesion treatment and an operation method thereof, the low energy radiation therapy system comprising: an optical scanner for acquiring 3D scanning data of a treatment region including a superficial lesion site; an irradiation unit configured to apply radiation to the treatment region; a calculation unit for calculating, on the basis of the 3D scanning data, a skin dose, energy of radiation, and a part-specific radiation amount adjustment value, and producing, according to the part-specific radiation amount adjustment value, shape data of a compensation unit to be provided at the end of the irradiation unit; and a 3D printer configured to three-dimensionally print and produce the compensation unit according to the shape data.