Abstract:
A detector assembly for a CT imaging system is provided. The detector assembly including a scintillator block including a plurality of pixels, each pixel configured to receive x-ray beams travelling in a transmission direction, a plurality of photodiodes, and a light guide coupled between the scintillator block and the plurality of photodiodes, the light guide including a plurality of light pipes, each light pipe configured to guide light emitted from a pixel of the plurality of pixels into an associated photodiode of the plurality of photodiodes, wherein each pixel has a first cross-sectional area that is substantially perpendicular to the transmission direction, wherein each photodiode has a second cross-sectional area that is substantially perpendicular to the transmission direction, and wherein the first cross-sectional area is different from the second cross-sectional area.
Abstract:
A luggage detection device is configured to detect luggage by generating computed tomography (CT) imaging slices. For each of the CT imaging slices, the luggage detection device is configured to identify at least one region within the CT imaging slice for removal based on at least one predefined rule, to remove pixel data associated with the at least one identified region within the CT imaging slice, to generate a pixel count representing a number of pixels in the modified CT imaging slice that include a value above a threshold pixel value, and to generate an object indicator based on a determination that the generated pixel count is above a threshold pixel count. The luggage detection device is further configured to display at least one of the plurality of CT image slices based on the presence of the corresponding baggage indicator.
Abstract:
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.
Abstract:
A system for implementing an electrical rotary joint in a large-diameter system using relatively small-diameter capsule slip rings is described herein. The system includes a system rotor that rotates about a system axis of rotation, and a system stator that is stationary with respect to the system rotor. The system also includes at least one conductive contact channel disposed on one of the system rotor and the system stator. The system further includes at least one capsule slip ring (CSR) coupled to the other of the system rotor and the system stator. The at least one CSR has a conductive annular element coupled thereto, the conductive annular element in mechanical contact with the at least one conductive contact channel such that the at least one CSR forms an electrical rotary joint between the system rotor and the system stator.
Abstract:
A diagnostic system for monitoring a status of a CT system includes at least one radiation detector configured to monitor a CT component and generate signals representing measurement data associated with the CT component. The system also includes a diagnostic computer device in communication with the detector. The device is configured to receive an electrical signal from the detector and identify a first frequency in the electrical signal. The device is also configured to compare the first frequency in the electrical signal to a first reference frequency stored in memory. The first reference frequency is at least partially indicative of a first mechanical status of the CT component. The device is further configured to determine that the first frequency in the electrical signal is substantially similar to the first reference frequency and, in response, determine that the CT system has the first mechanical status.
Abstract:
A battery shelf life indicator (BSLI) module, systems, and methods for monitoring remaining useful shelf life of a battery are provided herein. The BSLI module includes a temperature sensor configured to measure an ambient temperature proximate to the battery, and a processor configured to determine the remaining useful shelf life of the battery based on the measured ambient temperature. The BSLI module also includes a communication device configured to transmit battery-state data corresponding to the determined remaining useful shelf life to a server computing device.
Abstract:
A computed tomography (CT) gantry system is described herein. The CT gantry system includes a frame, a plurality of support wheels rotatably coupled to the frame, and a gantry resting upon the plurality of support wheels. In some embodiments, the gantry includes two gantry rings, and a cross member extending between the two gantry rings. In other embodiments, the gantry includes a first gantry ring, and a second gantry ring spaced apart from the first gantry ring in a direction parallel to an axis of rotation of the gantry. In some embodiments, the plurality of support wheels includes a plurality of front support wheels and a plurality of back support wheels. In some embodiments, the gantry includes a front gantry ring resting upon the front support wheels, a back gantry ring resting upon the back support wheels, and a cross member coupled between the front and back gantry rings.
Abstract:
A helical CT scanner for imaging an object is provided. The helical CT scanner includes an X-ray emitter configured to emit X-ray beams towards the object, and a detector array positioned opposite the X-ray emitter, the detector array including a plurality of discrete detector blocks arranged in a two-dimensional grid, each detector block including a plurality of pixels, wherein at least one first gap is defined between adjacent detector blocks in a first direction, and wherein at least one second gap is defined between adjacent detector blocks in a second direction. The helical CT scanner further includes a processing device communicatively coupled to said detector array, said processing device configured to reconstruct an image of the object based on image data acquired using said detector array.
Abstract:
The present disclosure is directed to the ability to use dopant-assisted photoionization to detect substances of interest. Various dopants can be used through the disclosed methods and processes to detect substances such as, for example, explosives, narcotics, illicit substances and the like.
Abstract:
A dual source ionizer includes a first ionization source and a second ionization source. The first ionization source is configured to generate a first electric field. The first electric field has a first field strength that is insufficient to form NOx− ions. The second ionization source is configured to generate a second electric field. The second electric field has a second field strength that is sufficient to form ozone and the NOx− ions.