Abstract: An apparatus for analyzing nuclides and the concentration thereof in waste contained in a radioactive waste packaging container according to the present disclosure relates to an apparatus that has detector devices located above/under the waste packaging container and performs nuclide and concentration analysis on the waste in the packaging container by scanning the packaging container in the longitudinal direction thereof using a forward/backward driving device. In particular, upper/lower detector modules are equipped with multiple high-resolution gamma ray detectors to increase inspection efficiency, each module is designed to be driven up/down, and each detector in the module is designed to be driven left/right, thereby performing nuclide and concentration analysis on various types of packaging containers regardless of the size thereof.

Abstract: An apparatus for analyzing nuclides and the concentration thereof in waste contained in a radioactive waste packaging container according to the present disclosure relates to an apparatus that has detector devices located above/under the waste packaging container and performs nuclide and concentration analysis on the waste in the packaging container by scanning the packaging container in the longitudinal direction thereof using a forward/backward driving device. In particular, upper/lower detector modules are equipped with multiple high-resolution gamma ray detectors to increase inspection efficiency, each module is designed to be driven up/down, and each detector in the module is designed to be driven left/right, thereby performing nuclide and concentration analysis on various types of packaging containers regardless of the size thereof.

Abstract: The present disclosure relates to an x-ray imaging method using a variable imaging plane projection and to an x-ray imaging device applying the same. By applying a variable imaging plane projection using at least two sets of scan data for different heights obtained while varying the height of the x-ray generator from an imaging object, it is possible to solve problems caused due to a magnification effect generated in the x-ray imaging field based on a fan-beam-type or cone-beam-type x-ray generator, thereby providing more accurate x-ray image information.

Abstract: The present disclosure relates to an x-ray imaging method using a variable imaging plane projection and to an x-ray imaging device applying the same. By applying a variable imaging plane projection using at least two sets of scan data for different heights obtained while varying the height of the x-ray generator from an imaging object, it is possible to solve problems caused due to a magnification effect generated in the x-ray imaging field based on a fan-beam-type or cone-beam-type x-ray generator, thereby providing more accurate x-ray image information.

Abstract: The present invention relates to a stabilization method of a plastic scintillator-based radiation detector of the present invention, wherein the Compton edge of K-40 that exists in the spectrum of a background radiation that reacts with the plastic scintillator is converted into a peak form through a proper signal process, and the output calibration of the detector is automatically performed in real time by using the information. Thus, the output of the plastic scintillator-based radiation detector is automatically calibrated in order to thereby stabilize the output of the detector regardless of the external environmental changes.

Abstract: A hand-held portable radiation detection device, such as a radiation isotopic identification device (RIID), is integrated with a personal digital assistant device (PDA), such as a smart phone, to provide improved data processing capability and user interface. The hand-held portable radiation detection device includes a mounting unit for holding the PDA, in which at least one function of the PDA may be controlled by a plurality of buttons provided on an outer casing of the radiation detection device.

Abstract: A hand-held portable radiation detection device, such as a radiation isotopic identification device (RIID), is integrated with a personal digital assistant device (PDA), such as a smart phone, to provide improved data processing capability and user interface. The hand-held portable radiation detection device includes a mounting unit for holding the PDA, in which at least one function of the PDA may be controlled by a plurality of buttons provided on an outer casing of the radiation detection device.

Abstract: The present invention relates to a stabilization method of a plastic scintillator-based radiation detector of the present invention, wherein the Compton edge of K-40 that exists in the spectrum of a background radiation that reacts with the plastic scintillator is converted into a peak form through a proper signal process, and the output calibration of the detector is automatically performed in real time by using the information. Thus, the output of the plastic scintillator-based radiation detector is automatically calibrated in order to thereby stabilize the output of the detector regardless of the external environmental changes.

Abstract: A method and a system for preparing a radiation image of a target are provided. The radiation imaging method includes the steps of collecting radiation emission data from a target, classifying the data into at least one energy range, separating the data in each energy range into N independent radiation distributions, processing the data in each of the N independent radiation distributions to estimate its true distribution; and reconstructing a radiation distribution image of the target using the processed data. The system includes at least one radiation detector module and at least one computerized component configured to perform the steps of the method.

Abstract: A method and a system for preparing a radiation image of a target are provided.

Abstract: A hand-held portable radiation detection device, such as a radiation isotopic identification device (RIID), is integrated with a personal digital assistant device (PDA), such as a smart phone, to provide with improved data processing capability and user interface. The PDA is configured to receive and process data received from the radiation detection device.

Abstract: A hand-held portable radiation detection device, such as a radiation isotopic identification device (RIID), is integrated with a personal digital assistant device (PDA), such as a smart phone, to provide with improved data processing capability and user interface. The PDA is configured to receive and process data received from the radiation detection device.

Abstract: The invention provides a radiation detector that can efficiently cool solid-state sensors used in collecting photons produced during conversion of radiation to light. The radiation detector can achieve an excellent cooling effect by transferring heat, which is produced during the cooling process, through a housing. The radiation detector comprises of an detection unit that detects the photons produced during the conversion of radiation to light, by utilizing a plurality of solid-state sensors installed on the motherboard. The radiation detector further comprises a heat transferring unit that cools the plurality of solid-state sensors simultaneously.

Abstract: The invention provides a radiation detector that can efficiently cool solid-state sensors used in collecting photons produced during conversion of radiation to light. The radiation detector can achieve an excellent cooling effect by transferring heat, which is produced during the cooling process, through a housing. The radiation detector comprises of an detection unit that detects the photons produced during the conversion of radiation to light, by utilizing a plurality of solid-state sensors installed on the motherboard. The radiation detector further comprises a heat transferring unit that cools the plurality of solid-state sensors simultaneously.

Abstract: A preclinical nuclear imaging detector system, including a gantry and one or more detector assemblies, each including a scintillator configured to interact with radiation emanating from a target test object being imaged and at least one pinhole collimator, having one or more pinhole apertures formed therein. The pinhole collimator is disposed between the target object and the scintillator, wherein a distance between the pinhole aperture and the scintillator is selected as a function of the number of pinhole apertures provided in the collimator and to optimize one of sensitivity or spatial resolution, such that the one or more pinhole apertures collectively project a unitary minified radiation image of the target object onto the scintillator. Further, one or more photosensors are optically coupled to the scintillator to receive interaction events from the scintillator.

Abstract: An imaging radiation detector includes a scintillator coupled to an array of photodiodes operating in Geiger mode. The array is divided into separate detector pixels, each of which is composed of a multiplicity of photodiode cells with their outputs tied together. While each of the cells operates independently in a binary or digital mode, by tying together the outputs of a multiplicity of adjacent photodiode cells forming a single pixel, the sum of the outputs is proportional to the intensity of generated scintillation photons, similar to the output of a PMT. Appropriate quenching circuitry is provided to rapidly reset the photodiodes after scintillation photon detection.

Abstract: A pinhole collimator is provided that eliminates or at least minimizes the need for collimator exchange, to manage system sensitivity versus spatial resolution tradeoff, and to control imaging FOV (field of view) depending on object size by controlling the focal length of the collimator. There is also provided a detector system is that includes a detector, a collimator, and means for changing the focal length. Various means for changing the focal length are also identified. The collimator can have a plurality of apertures in a top plate, each aperture with its own collimator septa. Additionally, there is provided a medical imaging system that includes the detector system and collimator of the present invention. The nuclear medical imaging systems can have a hand-held detector assembly and be portable.

Abstract: A nuclear imaging system and method are provided for synchronously recovering the field of view of a target to be imaged includes multiple detectors attached to a gantry, a support member or wobbling ring and a driver. The driver engages the wobbling ring whereby the wobbling ring rotates with respect to the gantry. The wobbling ring cooperates with the detectors causing the detectors to synchronously adjust to multiple viewing positions of a detection target, enabling recovery of the full field of view from an otherwise truncated field of view if the detectors were stationary with respect to the gantry.