Abstract: According to one embodiment, an X-ray tube includes an envelope with an opening, an X-ray transmission assembly mounted on the envelope and vacuum-tightly blocking the opening, a cathode and an anode target. The X-ray transmission assembly includes a window frame, an X-ray transmission window, an X-ray-resistive resin film, a sealing member and a dry gas. The X-ray transmission window is formed of a beryllium thin plate, accommodated in the window frame, and configured to maintain, along with the window frame, a vacuum-tight state inside the envelope. The X-ray-resistive resin film forms a space inside along with the window frame and the X-ray transmission window. The dry gas fills the space.

Abstract: According to one embodiment, an X-ray tube includes an anode target, a cathode including a filament and a convergence electrode which includes a groove portion, and an envelope. The groove portion includes a pair of first bottom surfaces which are located in the same plane as the filament and between which the filament is interposed in a width direction of the groove portion, and a pair of second bottom surfaces between which the filament and the pair of first bottom surfaces are interposed in a length direction of the groove portion and which are located closer to an opening of the groove portion than the pair of first bottom surfaces.

Abstract: In a rotary-anode type X-ray tube, an annular groove is annularly formed on a first surface of a rotary-anode. The annular groove is so extended as to be surrounded by an anode target and is arranged around a rotation axis of the rotary-anode is in rotation symmetry with respect to an axis of rotation. Slits are so formed in the rotary-anode as to be arranged around the rotation axis in rotation symmetry with respect to the rotation axis, each of the slits is cut in the rotary-anode and extended in the in communication with the annular groove, and through holes are communicated with the respective slits, and each of the through holes is opened in the annular groove, and is extended from the annular groove to the opposite surface.

Abstract: According to one embodiment, an X-ray tube includes an envelope including an inner space which is evacuated and is tightly closed and also including an X-ray radiation window, a cathode supporting member provided in the envelope, a cathode secured to the cathode supporting member, emitting electrons, and radiating heat, an anode target provided in the envelope, opposed to the X-ray radiation window, and radiating X-rays due to collision of the electrons emitted from the cathode, and a non-evaporable getter thermally connected to the cathode supporting member on the cathode side and activated by heat due to thermal conduction from the cathode supporting member.

Abstract: A common interconnect ring is provided at a periphery of a portion used to form a TFT array of an X-ray flat panel detector, and an X-ray flat panel detector TFT array substrate connected to signal lines and scanning lines via pairs of two protection diodes connected in parallel and having mutually-reverse polarities is manufactured. When inspecting the X-ray flat panel detector TFT array substrate, the same reference bias voltage as the amplifier of a detection circuit is applied from an external voltage application pad provided at the vicinity of a connection unit for the common interconnect ring and the protection diodes on the same side of the signal lines, a signal is provided to a scanning line connection pad to switch the thin film transistor ON, and an electrical signal flowing through the signal line is read from a signal line connection pad.

Abstract: According to one embodiment, a radiation detection device includes a chassis, a radiation detection panel, a support plate and a circuit board. The chassis includes an incident face cover and a side face portion covering a side face perpendicular to the incident face cover. The radiation detection panel is housed inside the chassis and is configured to detect radiation incident through the incident face cover. The support plate is housed inside the chassis and is fixed to the side face portion to support the radiation detection panel on a rear face on an opposite side to an incident face of the radiation. The circuit board is housed inside the chassis and is disposed on an opposite side to the radiation detection panel of the support plate. At least a part of a drive circuit configured to drive the radiation detection panel is mounted on the circuit board.

Abstract: According to an embodiment, a radiation detector comprises a photoelectric conversion substrate and a scintillator layer. The photoelectric conversion substrate converts light into an electrical signal. The scintillator layer contacts the photoelectric conversion substrate and converts radiation incident from the outside into light. The scintillator layer is a fluorescer of CsI containing Tl as an activator. The CsI is a halide. The concentration of the activator inside the fluorescer is 1.6 mass %±0.4 mass %. The concentration of the activator inside the fluorescer in an in-plane direction of the scintillator layer has the relationship of central portion>peripheral portion. The central portion is a central region of a formation region of the scintillator layer. The peripheral portion is an outer circumferential region of the formation region of the scintillator layer.

Abstract: According to one embodiment, an X-ray tube includes a cathode including a filament, an anode target, and an envelope. The cathode includes a metal lead wire supporter which is exposed outside the envelope, which is configured a part of the envelope, and to which a lead wire as a power supplier to the filament is attached such that the lead wire passes both inside and outside of the envelope, and a metal filament supporter fixed on the lead wire supporter, being in contact with the lead wire supporter, and supporting the filament.

Abstract: According to one embodiment, an X-ray tube includes an envelope, an anode and a cathode structure. The anode and the cathode structure are provided opposite to each other in the envelope. The cathode structure includes a cathode and an insulator which supports the cathode and is attached to the envelope. The insulator includes a basal portion attached to the envelope, a support portion which supports the cathode at a distal end projecting from the basal portion, and a tubular projection portion which is provided to project from the basal portion and opposite to a periphery of the support portion.

Abstract: According to one embodiment, an X-ray tube includes a cathode, an anode target and an envelope. The cathode includes an insulating member, a conductive line, a pin assembly, a filament, a focusing electrode, and a terminal assembly. The conductive line is formed on the insulating member. The pin assembly includes a pin and a first sleeve. The terminal assembly is fixed to the insulating member, is supporting the filament, and is electrically connecting the filament to the conductive line.

Abstract: According to one embodiment, a rotating-anode X-ray tube assembly includes an X-ray tube, a stator coil, a housing, an X-ray radiation window, and a coolant. The housing includes a first divisional part which includes an X-ray radiation port and to which the X-ray tube is directly or indirectly fixed, and a second divisional part located on a side opposite to an anode target with respect to an anode target rotating mechanism and coupled to the first divisional part. A coupling surface between the first divisional part and the second divisional part is located on one plane, and is inclined to an axis, with exclusion of a direction perpendicular to the axis.

Abstract: According to one embodiment, an X-ray tube assembly includes a cathode which emits electrons in an electron orbit direction, an anode target including a target surface with which electrons emitted from the cathode collides to generate X-rays, a vacuum envelope which contains the cathode and the anode target, and in which at least one recessed portion is formed to be recessed from the outside of the vacuum envelope in such a way as to surround the cathode, and a quadrupole magnetic-field generation portion which is provided outside the vacuum envelope, and which comprises four poles provided in the at least one recessed portion such that the cathode is located in a center of an area surrounded by the four poles.