Abstract:
Multi-energy radiation sources comprising charged particle accelerators driven by power generators providing different RF powers to the accelerator, capable of interlaced operation, are disclosed. Automatic frequency control techniques are provided to match the frequency of RF power provided to the accelerator with the accelerator resonance frequency. In one example where the power generator is a mechanically tunable magnetron, an automatic frequency controller is provided to match the frequency of RF power pulses at one power to the accelerator resonance frequency when those RF power pulses are provided, and the magnetron is operated such that frequency shift in the magnetron at the other power at least partially matches the resonance frequency shift in the accelerator when those RF power pulses are provided. In other examples, when the power generator is a klystron or electrically tunable magnetron, separate automatic frequency controllers are provided for each RF power pulse. Methods and systems are disclosed.
Abstract:
In one example embodiment, an x-ray tube comprises an anode configured to rotate at an operating frequency, and a bearing assembly configured to rotatably support the anode and tuned to a resonant frequency that is different than the operating frequency.
Abstract:
The invention relates to an X-ray system (2) for tomosynthetic scanning of an object (6), comprising an X-ray source (8), emitting an X-ray beam (20) for irradiating the object (6) during the tomosynthetic scanning which may be pivoted relative to the object (6) and a 2D X-ray detector (10) essentially fixed relative to the object (6) during tomosynthetic scanning, for receiving the X-ray radiation (20), the X-ray source (8) having at least two radiation sources (18a,b) arranged one behind the other with relation to the beam directions (22a,b) towards the object (6) thereof and which can be triggered independently of each other. According to a method for tomosynthetic scanning of an object (6) X-ray radiation (20) is emitted from an X-ray source (8) to pass through the object (6), during the tomosynthetic scanning the X-ray source (8) is pivoted relative to the object (6), the X-ray radiation (20) is detected by a 2D x-ray detector (10) which remains essentially fixed relative to the X-ray source (8) during the tomosynthetic scanning, the X-ray radiation (20) being emitted by at least two radiation sources (18a,b) in the X-ray source (8) arranged one behind the other with relation to the beam directions (22a,b) towards the object (6) thereof and which can be triggered independently of each other.
Abstract:
Multi-energy radiation sources comprising charged particle accelerators driven by power generators providing different RF powers to the accelerator, capable of interlaced operation, are disclosed. Automatic frequency control techniques are provided to match the frequency of RF power provided to the accelerator with the accelerator resonance frequency. In one example where the power generator is a mechanically tunable magnetron, an automatic frequency controller is provided to match the frequency of RF power pulses at one power to the accelerator resonance frequency when those RF power pulses are provided, and the magnetron is operated such that frequency shift in the magnetron at the other power at least partially matches the resonance frequency shift in the accelerator when those RF power pulses are provided. In other examples, when the power generator is a klystron or electrically tunable magnetron, separate automatic frequency controllers are provided for each RF power pulse. Methods and systems are disclosed.
Abstract:
Methods and systems for generating bremsstrahlung with enhanced photon flux in a narrow cone at forward angles utilize a thin target of a high-Z material such as gold as radiator, supported on a tube of a low-Z material such as titanium, which tube contains a circulating fluid such as water which acts as a coolant and also may absorb the incident electron beam.
Abstract:
The present invention relates to X-ray generating technology in general. Providing an electron collecting element of an X-ray generating device statically may allow for the manufacture of X-ray systems with reduced moving parts and actuating parts, possibly reducing manufacturing costs and sources for failure. Consequently, an electron collecting element with increased thermal loadability is presented. According to the present invention, an electron collecting element (28) is provided, comprising a surface element (22) and a heat conducting element (26). The heat conducting element (26) comprises a first thermal conductivity in a first direction and at least a second thermal conductivity in at least a second direction. The first thermal conductivity is greater than the second thermal conductivity. The first direction is substantially perpendicular to the surface element (22).
Abstract:
Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed.
Abstract:
The present invention is directed to an anode for an X-ray tube. The X-ray tube has an electron aperture through which electrons emitted from an electron source travel subject to substantially no electrical field and a target in a non-parallel relationship to the electron aperture and arranged to produce X-rays when electrons are incident upon a first side of the target, wherein the target further comprises a cooling channel located on a second side of the target. The cooling channel comprises a conduit having coolant contained therein. The coolant is at least one of water, oil, or refrigerant.
Abstract:
Methods and systems for generating bremsstrahlung with enhanced photon flux in a narrow cone at forward angles utilize a thin target of a high-Z material such as gold as radiator, supported on a tube of a low-Z material such as titanium, which tube contains a circulating fluid such as water which acts as a coolant and also may absorb the incident electron beam.