There are provided systems and methods comprising obtaining an image of at least a part of an item, obtaining data informative of a pixel intensity of the part of the item in the image, obtaining first data informative of a pixel intensity in an image of a part of a first item associated with a prohibited material, wherein the part of the first item meets a similarity criterion with the part of the item, obtaining second data informative of a pixel intensity in an image of a part of a second item which is not associated with a prohibited material, wherein the part of the second item meets the similarity criterion with the part of the item, and using the first data, the second data and the data to determine whether the part of the item is associated with a concealed prohibited material in the image.

A large-area directional radiation detection system may include a large number of slab-shaped detectors stacked side-by-side and alternately displaced frontward and rearward, thereby providing a longitudinally-staggered array of protruding and recessed detectors. The protruding detectors collimate or restrict the lateral field of view of the recessed detectors, thereby enabling the angular position and distance of a source to be determined. The high detection efficiency and large solid angle of the staggered detector array enable rapid detection of even well-shielded threat sources at substantial distances, while simultaneously determining the positions of any sources detected. This detector array will be essential for guarding against clandestine delivery of nuclear materials in the coming century.

The present invention relates to a container search system comprising: a radiation irradiation unit for irradiating radiation to a container to be inspected; a detection unit installed opposite to the radiation irradiation unit to detect radiation having passed through a container; a transfer cart for loading an automobile thereon, on which a container to be inspected is loaded, and travelling along a search path formed between the radiation irradiation unit and the detection unit; and a circulation orbit unit formed to allow the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor for generating a moving magnetic field is formed on either side among the transfer cart and the search path and a secondary-side reaction plate for inducing a secondary eddy current due to the moving magnetic field and generating a linear driving force is formed on the other side thereof. The container search system can transfer a transfer cart according to a linear motor scheme in a radiation search section, and thus can obtain a radiation search image of high quality.

Proactively identifying and interdicting transport of commodities associated with illicit nuclear materials and nuclear weapons shielded by high Z-number materials, such as lead, can help ensure effective nuclear nonproliferation. In an embodiment, a method for imaging an object on a surface includes exciting a surface with ultrasonic excitation from an ultrasonic transmitter having an ultrasonic transducer in contact with the surface. The method further includes imaging, at a processor, a two-dimensional representation of the object acoustically coupled to the surface based on the ultrasonic reflections received at an ultrasonic receiver via a receiving transducer in contact with the surface. This method can complement existing x-ray screening systems to increase the odds of detecting radiological materials.

The present invention relates to an inspection system. The inspection system comprises a base, a boom lifting mechanism provided on the base, and a boom mounting a detector. The boom lifting mechanism includes at least two support arms arranged sequentially. The at least two support arms include a base arm and a distal arm. The base arm is connected to the base, the boom is mounted on the distal arm, the inspection system has a scanning state and a transporting state, and two adjacent support arms of the at least two support arms are rotatably connected so that the height of the boom in the scanning state is different from that in the transporting state. The boom lifting mechanism of the inspection system of the present invention lifts the boom by rotatably connecting two adjacent support arms, and presents less required driving force compared to the lifting of the boom directly in a vertical direction in the prior art. Thus, there is less weight of the driving mechanism for driving the lifting of the boom, so as to reduce the self-weight of the inspection system.

A panel radiation detector is provided for detecting radiation event(s) of ionizing radiation, comprising a plurality of adjoining plastic scintillator slabs, a plurality of silicon photomultiplier sensors arranged at an edge of at least one of the plastic scintillator slabs) and configured to detect scintillation light generated in the scintillator slabs responsive to the radiation events, and a plurality of signal processing units each connected to one of the silicon photomultiplier sensors, wherein the signal processing units each comprise a digitization circuit configured to generate a digitized signal for signal analysis by executing 1-bit digitization of a detection signal generated by at least one of the silicon photomultiplier sensors responsive to the detected scintillation light for determining the energy of the detected radiation event(s).

A panel radiation detector is provided for detecting radiation event(s) of ionizing radiation, comprising a plurality of adjoining plastic scintillator slabs, a plurality of silicon photomultiplier sensors arranged at an edge of at least one of the plastic scintillator slabs) and configured to detect scintillation light generated in the scintillator slabs responsive to the radiation events, and a plurality of signal processing units each connected to one of the silicon photomultiplier sensors, wherein the signal processing units each comprise a digitization circuit configured to generate a digitized signal for signal analysis by executing 1-bit digitization of a detection signal generated by at least one of the silicon photomultiplier sensors responsive to the detected scintillation light for determining the energy of the detected radiation event(s).

Provided is an information processing device including an acquisition unit that acquires article information indicating an article included in baggage of a passenger in a security inspection of a first country and a providing unit that provides the article information to a device used for a procedure for an entry into a second country of the passenger.

A bin for use in a security checkpoint can include a receptacle surface, sidewalls, a lip provided on the sidewalls, and a geometrical marker. The geometrical marker is radiographically, visually, and tactilely detectable on the lip of one side of the bin. The geometrical marker includes a plurality of tag elements.

An imaging system includes a conveyor duct including a first wall and an opposing second wall, a gantry coupled to one end of the conveyor duct, an imaging assembly associated with the gantry, and a conveyor assembly coupled to the conveyor duct. The conveyor assembly includes a first rail coupled to the first wall of the conveyor duct and a second rail coupled to the second wall of the conveyor duct, the first rail and the second rail defining a channel therebetween. The imaging system also includes a tray including a base, wherein the conveyor assembly is configured to transport the tray into the gantry, and wherein the base of the tray extends between and below the first rail and the second rail when the conveyor assembly is transporting the tray.