Abstract: In accordance with a method for calibrating structurally identical spectrometers for constituent analysis, a multiplicity of samples are provided and concentrations of one constituent in the individual samples are measured using a reference measuring method. Spectra of the individual samples are measured using one spectrometer selected from the structurally identical spectrometers to determine a preliminary regression model. At least one spectrum is selected from the measured spectra and/or a mean value spectrum formed from the measured spectra. A multiplicity of error spectra are generated using a mathematical model of the structurally identical spectrometers. The individual error spectra are added in each case to the individual selected spectra to obtain simulated spectra.

Abstract: We describe a method and a computer system for analysing a radiation treatment plan using a dose of flash radiation to irradiate a volume within a patient and a radiation treatment system using the same. The computer system comprises a processor which is configured to obtain oxygen pressure information for the volume to be irradiated; obtain parameters from a patient treatment plan; input the obtained oxygen pressure information and parameters in to a model which predicts complex damage within the irradiated volume caused by the dose of flash radiation; output a prediction, using the model, of the complex damage caused within the volume by the dose of flash radiation; and quantify, using the prediction, a level of damage to healthy tissue within the irradiated volume. Complex damage is damage which is more complex than a double strand break within DNA in patient tissue and the model is a function of energy of particles within the radiation and oxygen pressure which varies with time.

Abstract: A universal phantom includes a first phantom and a second phantom. The first phantom comprises a plurality of radiation markers. The second phantom comprises a plurality of optical markers. The second phantom is fixedly attachable to the first phantom in a predetermined position. A calibration method employs a universal phantom to consolidate the tasks of determining the isocenter of a radiation machine, calibrating optical devices, and registering the optical devices in a radiation coordinate system with origin at the isocenter.

Abstract: Provided are methods of detecting, assessing or determining the presence or absence of particles, such as bead particles, present in a cell composition. Also provided are articles of manufacture and kits for use in the methods.

Abstract: Patient information for a particular patient, radiation treatment information, and information regarding a particular radiation treatment platform that includes at least one multi-leaf collimator are each accessed. These teachings then provide for optimizing a radiation treatment plan to dose at least one treatment volume in the particular patient using the particular radiation treatment platform as a function of the patient information, the radiation treatment information, and the information regarding the particular radiation treatment platform, wherein the optimizing does not include optimizing movement of any leaves of the multi-leaf collimator.

Abstract: The present disclosure is directed towards a treatment planning system for use in a stereotactic radiotherapy system. In particular, the disclosed systems and methods may be used for generating a treatment plan and/or verifying an existing treatment plan. Moreover, the disclosed systems and methods may be suitable for use in a clinical setting. A method for verifying a treatment plan of a stereotactic radiotherapy device may include the steps of receiving a treatment plan, generating a second treatment plan by applying a modified monte-carlo method to regions of interest in the treatment plan, and identifying discrepancies between the received treatment plan and the generated second treatment plan.

Abstract: A radiation imaging system includes a radiation detector configured to capture a radiation image based on emitted radiation, a control apparatus configured to control the radiation detector, a radiation generation apparatus configured to emit the radiation, and a plurality of relay apparatuses configured to connect these apparatuses. In the radiation imaging system, the control apparatus performs maintenance of the relay apparatuses via the radiation detector.

Abstract: A means is provided for enabling easy identification of baggage in which one or more hazardous item is detected. An inspection system is equipped with a first conveyor, inspection device, cover, camera, controller and display. The first conveyor transports baggage to the inspection device. The inspection device captures transmitted-light images of the baggage using light that transmits through the baggage. The cover covers a transport path of the baggage to prevent a hand of a visitor from being inserted into an image shooting area where electromagnetic waves that are harmful to the human body are irradiated. The camera captures visible-light images of the baggage using visible light. The controller controls the first conveyor, inspection device, camera and display. Under control of the controller, the display simultaneously displays a transmitted-light image and a visible-light image of the baggage.

Abstract: A neutron beam detecting device according to the invention includes: a first solar cell-type detector that is provided with, on a surface thereof, a conversion film for converting neutrons into photons or any charged particle beam among alpha particles, protons, lithium nuclei, gamma rays or beta rays, and generates a current in response to incident radiation; a radiation detector that generates a current insensitive to neutrons as an output signal in response to the radiation incident; a current measuring device that detects, as signals, the current generated by the first solar cell-type detector and the current generated by the radiation detector in response to the incident radiation; and a flux calculating unit that compares the current signals from the detectors which are detected by the current measuring device.

Abstract: The present invention relates to a remote tomography system. A filament system generates at least one plurality of plasma filaments. An electromagnetic radiation (EMR) system directs EMR towards the at least one plurality of plasma filaments such that the EMR reflects off of the at least one plurality of plasma filaments towards at least one target region. The EMR system is configured to receive EMR reflected from the at least one plurality of plasma filaments such that EMR reflecting from the at least one target region can be directed towards the EMR system.

Abstract: The present disclosure provide pipe scanning systems suitable for performing integrity and reliability inspection of pipelines, including insulated and non-insulated pipelines. The pipe scanning system may include a track disposed about a surface of the pipeline (e.g., on top of the insulation for insulated pipelines or on top of the pipe for non-insulated pipelines) and a scanning device mounted on the track via a drive carriage. The drive carriage includes components to facilitate movement of the drive carriage and the scanning device along the track such that the scanning device travels about the circumference of the pipeline. The scanning device includes an x-ray emitter and a digital x-ray detector that may capture media content indicative of a scanned section of the pipeline (e.g., a 360° circumferential scan), and the media content may be analyzed to detect the presence of one or more defects, such as corrosion under insulation (CUI).

Abstract: A system and method are provided for assessing a radiation therapy plan to be implemented on a particular radiation therapy system that includes a multi-leaf collimator (MLC). The method includes receiving a radiation therapy plan and calculating at least one metric indicating transmission characteristics of a beam delivered using the particular radiation therapy system to perform the radiation therapy plan using a model of the MLC having a plurality of zones, wherein each zone is classified based on the transmission characteristics. The method also includes evaluating the at least one metric against a tolerance for variation between the radiation therapy plan and an implementation of the radiation therapy plan on the particular radiation therapy system and generating an alert indicating that the at least one metric is outside the tolerance.

Abstract: An x-ray imaging apparatus includes a holdable housing; an x-ray source mounted within the housing and configured to output a fan beam of x-rays; and a hoop chopper wheel rotatably mounted within the housing and comprising an x-ray attenuating material configured to block x-rays of the fan beam. The hoop chopper wheel defines a set of beam apertures of which each aperture is configured to pass therethrough a corresponding angular portion of x-rays from the fan beam, so that rotation of the hoop chopper wheel causes scanning of the corresponding angular portion of x-rays. The x-ray source may be a transmission-type x-ray tube configured to output the fan beam centered in an x-ray extraction direction forming an angle greater than 0 degrees with respect to a longitudinal axis of the x-ray tube.

Abstract: The embodiments of the present disclosure provide a system for determining a radiation dose. The system may include: obtaining data related to radiation source, a radiation auxiliary image of a target object at a target radiation time point, and an initial fluence map corresponding to the target radiation time point; determining a target fluence map corresponding to the target radiation time point by one or more iterations based on the radiation auxiliary image, the initial fluence map, and the data related to radiation source; obtaining a target scanning image of the target object; and determining the radiation dose received by the target object at the target radiation time point, based on the target fluence map, the target scanning image, and the data related to radiation source.

Abstract: An X-ray computed tomography apparatus includes processing circuitry and a display. The processing circuitry is configured to perform reconstruction processing to raw data generated by a scan of a subject to reconstruct a medical image, and determine a posture of the subject at the time of the scan, according to an imaging condition reflecting an examination order for the scan. The display displays the medical image in association with information as to the posture.

Abstract: In some implementations, a device may produce, via an x-ray module, x-rays to be directed towards a body part. The device may detect, via a sensor, the x-rays reflected from the body part. The device may generate, via the sensor, signals based on the x-rays reflected from the body part. The device may generate, via a processor, an x-ray image of the body part based on the first signals. The device may transmit the x-ray image to a server. The device may receive, from the server, a message that indicates a diagnosis associated with the x-ray image. The device may display, via a user interface, the x-ray image and information associated with the diagnosis associated with the x-ray image.

Abstract: A radiotherapy device, a method and a computer readable medium are disclosed. The radiotherapy device includes a radiation source and a controller. The radiation source is configured to apply radiation to a subject. The controller is configured to determine an overlap between a defined volume of the subject and an isodose surface and to instruct the radiation source to halt application of the radiation based on the determination.

Abstract: A jaw assembly and a medical accelerator are provided. The jaw assembly includes: a jaw base, a moving assembly and at least one set of jaws, each set of jaws including at least two jaw bodies. The jaw base is detachably connected to a mounting seat of a treatment head beam shaping module of a medical accelerator, and when the jaw base is mounted on the mounting seat, a beam opening formed is located under the treatment head beam shaping module. The jaw body is connected to the jaw base through the moving assembly, and the moving assembly is configured to move the jaw body to between the beam opening and the treatment head beam shaping module, or to move the jaw body out between the beam opening and the treatment head beam shaping module to adjust a beam flow through the beam opening.

Abstract: Presently disclosed is an x-ray scanning system and method for inspecting an object. The system has a first mobile x-ray scanner configured for scatter imaging and to generate a first compilation of scan data of a first side of the object. A second x-ray scanner is configured for imaging and generating a second compilation of scan data of a second side of the object. A movement device is configured and disposed to move at least one of the first scanner, the second scanner, and the object being scanned, during the scanning of the object. A data integrator is configured and disposed to receive and integrate the first compilation of scan data and the second compilation of scan data.

Abstract: A calibration phantom for radiometric characterization and/or radiotherapy dose calculation of a subject is provided, which includes an ellipsoid base having a primary volume defining a plurality of cylindrical voids, each of said cylindrical voids configured to receive a cylindrical insert having a diameter, wherein the ellipsoid base, the primary volume, and each of said inserts are formed from a tissue substitution material independently selected to approximate a radiological property of an anatomical feature of the subject to which the ellipsoid base, the primary volume, and each of said inserts corresponds, wherein the radiological property of the tissue substitution material, the diameter of each of said inserts, and a location of each of said inserts within the ellipsoid base are selected to mimic beam hardening upon exposure of the calibration phantom to a radiation beam. Optionally, one or more peripheral rings are disposed concentrically about the ellipsoid base.