According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a detector, and processing circuitry. The X-ray tube emits X-rays. The detector detects X-rays that have been emitted from the X-ray tube and have passed through the subject. The processing circuitry sets an imaging condition. The processing circuitry evaluates the imaging condition based on information on a lower limit range of a count value of the detected X-rays that may cause image degradation.

The present disclosure describes a radiation sensing and reporting devices, systems, and methods. The devices and systems are a flexible material that detects the presence of radiation over a surface area and reports the specific location and intensity of the radiation. An article is provided that includes a substrate; a plurality of radiation sensors, each radiation sensor of the plurality of radiation sensors being disposed at a corresponding position on the substrate; and alert circuitry coupled to the plurality of radiation sensors, wherein the alert circuitry indicates, in real time, a localized detection of radiation according to corresponding one or more positions on the substrate of a particular one or more radiation sensors of the plurality of radiation sensors.

The present disclosure describes a radiation sensing and reporting devices, systems, and methods. The devices and systems are a flexible material that detects the presence of radiation over a surface area and reports the specific location and intensity of the radiation. An article is provided that includes a substrate; a plurality of radiation sensors, each radiation sensor of the plurality of radiation sensors being disposed at a corresponding position on the substrate; and alert circuitry coupled to the plurality of radiation sensors, wherein the alert circuitry indicates, in real time, a localized detection of radiation according to corresponding one or more positions on the substrate of a particular one or more radiation sensors of the plurality of radiation sensors.

A system for monitoring one or more environmental conditions associated with a working environment includes a wearable device configured to be worn by a worker and one or more environmental sampling sensors configured to monitor the one or more environmental conditions associated with the working environment and determine environmental sampling information based on the monitoring of the one or more environmental conditions. The system further includes a positioning sensor configured to determine positioning information for the worker, the positioning information for the worker including information regarding positioning of the worker relative to the working environment. The system includes a controller configured to receive the environmental sampling information, receive the positioning information from the positioning sensor, and determine, based on the environmental sampling information and the positioning information, if the one or more environmental conditions necessitates an alert to be presented to the worker.

A system for monitoring one or more environmental conditions associated with a working environment includes a wearable device configured to be worn by a worker and one or more environmental sampling sensors configured to monitor the one or more environmental conditions associated with the working environment and determine environmental sampling information based on the monitoring of the one or more environmental conditions. The system further includes a positioning sensor configured to determine positioning information for the worker, the positioning information for the worker including information regarding positioning of the worker relative to the working environment. The system includes a controller configured to receive the environmental sampling information, receive the positioning information from the positioning sensor, and determine, based on the environmental sampling information and the positioning information, if the one or more environmental conditions necessitates an alert to be presented to the worker.

A dynamic, wearable low-cost, personal high-sensitivity and wide-dynamic range measurement apparatus and method provide an accurate, objective and independent device for the real-time measurement and monitoring of an individual's career or lifetime exposure to known and unknown sources of harmful ionizing radiation, for real-time radiation exposure monitoring, overexposure warning and cancer risk management due to harmful radiation in all ambient environments. The measurement apparatus and method are wirelessly interfaced to a smartphone/controller or other host computer which provide a verification device to prevent an unauthorized use, a device to time-stamp and permanently data-log measured location based data using a smartphone/GPS data, and a device to predict and warn the individual when dangerous levels are actually approached, or will likely be approached or exceeded over the entire career or lifetime of the individual, and provide an access device for real-time estimates of the individual's risk of developing cancer or other threatening disease. Also, the measurement apparatus and method provide an additional device to allow these personal radiation exposure data to be made available via the Internet, and/or cloud storage, for digital data applications such as personal electronic health records and/or for future data mining, Internet, if Things, etc., applications.

A dynamic, wearable low-cost, personal high-sensitivity and wide-dynamic range measurement apparatus and method provide an accurate, objective and independent device for the real-time measurement and monitoring of an individual's career or lifetime exposure to known and unknown sources of harmful ionizing radiation, for real-time radiation exposure monitoring, overexposure warning and cancer risk management due to harmful radiation in all ambient environments. The measurement apparatus and method are wirelessly interfaced to a smartphone/controller or other host computer which provide a verification device to prevent an unauthorized use, a device to time-stamp and permanently data-log measured location based data using a smartphone/GPS data, and a device to predict and warn the individual when dangerous levels are actually approached, or will likely be approached or exceeded over the entire career or lifetime of the individual, and provide an access device for real-time estimates of the individual's risk of developing cancer or other threatening disease. Also, the measurement apparatus and method provide an additional device to allow these personal radiation exposure data to be made available via the Internet, and/or cloud storage, for digital data applications such as personal electronic health records and/or for future data mining, Internet, if Things, etc., applications.

An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

A method for optimizing an aviation radiation dose comprises a) gathering flight-relevant data including at least one flight schedule; b) gathering radiation data including at least a current radiation field assigned to the at least one flight schedule, historical radiation data assigned to the flight-relevant data and a radiation dose threshold; c) calculating an expected radiation dose based on the flight-relevant data and the radiation data; and d) modifying the flight-relevant data and repeating steps a) to c) at least once in order to obtain optimized flight-relevant data with regard to the expected radiation dose. With each iteration the flight-relevant data is modified.