Abstract: 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.

Abstract: 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.

Abstract: An apparatus for gating delivery of radiation by a radiation delivery system to a patient is described. The apparatus includes at least one electrode positionable adjacent to but not touching a patient, at least one capacitance sensor electrically connected to the at least one electrode and configured to monitor a capacitance of the at least one electrode and generate an output signal indicative of the capacitance, and at least one processor configured to receive and process the output signal, determine a computed measure of amplitude and/or phase of respiration of the patient, and generate a gating signal for enabling or inhibiting delivery of radiation by the radiation delivery system based on the determined measure of amplitude and/or phase of respiration of the patient.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method and system for recording and verifying three-dimensional dose distributions a film phantom uses a phantom which includes a cavity for receiving film sheets. A three-dimensional radiation dose described by a stereotactic radiosurgery plan can be delivered to the phantom while the cavity is loaded with film. The film can be developed to provide multiple dose images. Thereafter, based on the multiple dose images, a measured three-dimensional dose distribution map is obtained. The phantom may have a pattern of translucent areas which expose fiducial marks on the film. The fiducial marks may be used to determine a position and orientation of the film relative to the phantom.

Abstract: A method and system for recording and verifying three-dimensional dose distributions a film phantom uses a phantom which includes a cavity for receiving film sheets. A three-dimensional radiation dose described by a stereotactic radiosurgery plan can be delivered to the phantom while the cavity is loaded with film. The film can be developed to provide multiple dose images. Thereafter, based on the multiple dose images, a measured three-dimensional dose distribution map is obtained. The phantom may have a pattern of translucent areas which expose fiducial marks on the film. The fiducial marks may be used to determine a position and orientation of the film relative to the phantom.

Abstract: A method of radiotherapy includes irradiating a treatment volume containing a high atomic number contrast medium with a photon beam characterized by a peak energy of at least 1 MeV and a mean energy in excess of 250 keV. The irradiation may be provided by a beam from a linear accelerator operating without a flattening filter. The linear accelerator may have multiple modes including one or more modes for operating with a flattening filter and one or modes for operating without a flattening filter.