The Yoshida Dental Mfg. Co., Ltd.

Terumi Takemoto

Takeshi Tomoe

Michizo Yamanaka

Takanori Wagatsuma

Kazuaki Hara

Shigeo Tamura

A cross section obtained by cutting an X-ray beam at a time of taking projection data from the X-ray beam detected by an X-ray sensor, with a plane, which is perpendicular to the central axis of the X-ray beam and runs through the central axis of a photographic region, is defined as a photography specification surface. The number of the photography specification surface per unit area in a plane, as the photographic region is viewed from a point in the direction along the central axis of the photographic region, is defined as overlap density of the projection data. A controller of an X-ray photography device executes a leveling control which levels the overlap density of the projection data between at an outer portion and inner portion of the photographic region. Thus, an X-ray photographic device is provided that is capable of improving the image quality in the entire photographic region.

X-ray photography device

Radiographic X-ray equipment includes a revolution driving device that causes an X-ray irradiating member and an X-ray imaging member to perform a revolving movement around a subject with a revolution center line as the center, and a main body control unit that controls the revolution driving device, a secondary driving device controlled by the main body control unit to cause the X-ray imaging member to perform a local movement different from the revolving movement, with a movement width in a predetermined direction, a storing means that stores electric power for the X-ray imaging member, and a supplying means that supplies electric power to the storing means. The X-ray imaging member and the storing means are connected to each other, and the secondary driving device causes the storing means and the X-ray imaging member to perform the local movement as a unit without moving relative to each other.

Radiographic X-ray equipment

An X-ray imaging device wherein a control section rotates an arcuate movement arm by actuating a turn-driving unit, turns an X-ray source and an X-ray sensor around a subject, and actuates a shifting unit to simultaneously shift the transmission part of the subject, through which an X-ray flux detected by the X-ray sensor passing. Thus provided is an X-ray imaging device in which an X-ray imaging unit having a comparatively narrow detection area can be used to reduce costs, the imaging operation efficiency can be improved, and the vibration of moved members, such as the X-ray imaging unit, can be reduced.

X-ray imaging device

An X-ray photographing device includes an X-ray irradiating unit () for irradiating an object () with an X-ray beam () having a slit shape from a source (), and an imaging member () provided with a surface () to receive the X-ray beam. A pivot drive unit causes the irradiating unit () and the imaging member () to pivot about a pivoting center line (La) around the object (), and a sub-drive unit () causes the imaging member () to have a local motion in a circumferential direction with a shift width (Mw). A width (W) of the surface () in the circumferential direction is smaller than the shift width (Mw) and the local motion is a local rotation motion made on the rotation center line (Lc). This configuration reduces the cost of the device, reduces vibrations of the imaging member (), and enhances operating efficiency.

X-ray photographing device

An X-ray photographing device comprising a turning means for turning an x-ray source and an X-ray sensor around a subject is provided with an arcuate movement means for arcuately moving the X-ray sensor around an arcuate movement center axis, and a control unit. The control unit continuously performs a first photographing step for detecting an X-ray flux while turning the X-ray sensor in a first arcuate movement range around the arcuate movement center axis by the arcuate movement means, a shifting/turning step for shifting/turning an arcuate movement arm around the subject by the turning means, and a shifting/photographing step for detecting the X-ray flux while turning the X-ray sensor in a second arcuate movement range around the arcuate movement center axis by the arcuate movement means in the state shifted from the first arcuate movement range by a very small angle in the shifting/turning step.

Cylindrical support having dope prism built therein is rotatably fitted in barrel as a constituent of stomatocamera frame . The support has pin erected on its periphery, and the barrel is furnished with guide channel formed along its circumference. The pin pierces the guide channel and protrudes from the periphery of the barrel . Protrudent end of the pin is locked to locking channel of operating ring fitted to the periphery of the barrel . The dope prism built in the camera frame is rotated by revolving the operating ring . Thus, the image can be rotated without the need to revolve the CCD camera frame.

Growing community of inventors

Tokyo, Japan

Terumi Takemoto