Abstract:
An x-ray emitter includes a housing. In an embodiment, the housing includes a diamagnetic or paramagnetic housing material and a plurality of ferromagnetic particles. In an embodiment, the ferromagnetic particles are aligned substantially along closed paths. A medical device includes an embodiment of the x-ray emitter. A method is further for producing an embodiment of the x-ray emitter.
Abstract:
The target includes a target layer configured to be irradiated with an electron to generate an X-ray and a support substrate configured to support the target layer. The support substrate includes a polycrystalline diamond and includes multiple structure planes having different area densities of plane orientations from one another. The target layer is supported by the support substrate at a structure plane with a smaller area density of the {101} plane than the area density of the {100} plane and the area density of the {111} plane.
Abstract:
A multiradiation generation apparatus according to the present invention includes a plurality of radiation sources arranged in a row. Each of the radiation sources includes an electron source configured to emit electrons and a target unit configured to generate radiation upon receiving electrons emitted from the electron source. At least one of the radiation sources is a dual-purpose radiation source used for both tomosynthesis imaging and non-tomosynthesis imaging, and the other radiation sources are single-purpose radiation sources used only for tomosynthesis imaging.
Abstract:
The present invention provides an X-ray generating apparatus and an X-ray fluoroscopy imaging system comprising the same. The X-ray generating apparatus comprises: an electron accelerator including an electron acceleration unit, an electron emission unit, and a target; a shielding and collimating device, including a shielding structure and a collimator arranged in the shielding structure, wherein the target is surrounded by the shielding structure, the collimator is arranged in a direction passing through the target point and forming an angle from 30 degrees to 150 degrees with the electron beam shooting the target.
Abstract:
The present invention provides an X-ray imaging system for capturing an X-ray image of teeth and a jawbone, including a tubular X-ray generating unit placed in an oral cavity, and a movable X-ray detection unit placed in the oral cavity outer side region corresponding to the X-ray generating unit and corresponding to a face or an X-ray detection unit having a curved surface shape similar to the face.The present invention having the configuration may obtain a teeth X-ray image with a large surface area while minimizing the dose of X-ray exposed to a patient by placing an X-ray generating device in the oral cavity and disposing a movable sensor or a sensor with a large surface area on the outer side of the oral cavity to obtain an X-ray image, reduce excessive X-ray exposure and foreign body sensation in the oral cavity, which a panoramic mode X-ray generating device or an oral sensor-type X-ray generating device in the related art has, to enhance the safety and convenience of the patient, and obtain a clear image with a large surface area, which helps a medical staff in making an exact judgment, with the least number of shootings.
Abstract:
Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.
Abstract:
Disclosed herein is an X-ray source having cooling and shielding functions. The X-ray source includes an X-ray generation unit (100) which has one or more insulation columns (160) and emits X-rays in a vacuum; a cooling unit (180) which is provided around a periphery of the X-ray generation unit and removes heat generated from the X-ray generation unit; and a shielding unit (190) which is provided around a periphery of the cooling unit and shields an area exposed to X-rays other than the areas related to the emission of the X-rays.
Abstract:
An X-ray generating apparatus for paracentesis of the present invention has an electron emitting portion arranged in an envelope, and a target that emits X-ray by irradiation with electrons that are emitted from the electron emitting portion, and irradiates an affected part in a living body with the X-ray which have been emitted from the target. The apparatus can adjust a region to be irradiated with X-ray, and thereby enables the affected part to be more effectively and efficiently treated with X-ray.The apparatus also includes a front shield which is provided so as to protrude to the outside from the envelope and has an opening that forms a passage of the X-ray which irradiate the affected part, and can adjust a region to be irradiated with X-ray which irradiate the affected part, by the exchange of the front shield.
Abstract:
An X-ray generating apparatus controls driving of an X-ray tube. The X-ray tube includes an electron source emitting electrons due to application of a voltage, a transmission-type target generating an X-ray due to collision of electrons emitted from the electron source, and a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and blocking an X-ray that scatters toward the electron source. When generating the X-ray, application of a voltage to the transmission-type target is started, and emission of electrons from the electron source is caused after passage of a predetermined period indicating a time period from starting voltage application until the transmission-type target reaches a predetermined voltage. When stopping X-ray generation, application of the voltage to the transmission-type target is stopped after stopping the emission of electrons from the electron source.
Abstract:
A medical imaging method comprising generating a radiation at a first energy level by a radiation source, generating a radiation at a second energy level different from the first energy level by the radiation source, emitting the generated radiations at an output of the radiation source towards a detector, and blocking or diverting the emitted radiations during at least one intermediate phase during which the radiation source switches in a transient way from one of the first energy level and the second energy level to the other of the first energy level and the second energy level.