The Yoshida Dental Mfg. Co., Ltd.

Takeshi Tomoe

Terumi Takemoto

Michizo Yamanaka

Takanori Wagatsuma

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

A dental x-ray photographing device includes a rotating means () for rotating an arm () which supports an x-ray source () and an x-ray imaging means (), a sliding means () for linearly moving the x-ray imaging means (). The dental x-ray photographing device obtains a first set of projection images which goes through a first region by moving the x-ray imaging means () to a first detection position, obtains a second set of projection images which goes through a second region by moving the x-ray imaging means () to a second detection position, and paste the first set of projection images and the second set of projection images together. An origin-position detecting means () for detecting an origin position of the x-ray imaging means () includes an optical sensor () that detects a position of an end () of a light blocking plate that linearly moves together with the x-ray imaging means (), and detects a time point at which the end () of the light blocking plate passes the optical sensor () in the forward direction as the origin position. According to such a configuration, it becomes possible to obtain a highly precise and large FOV using the x-ray imaging means that has a narrow photo receiving surface.

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Tokyo, Japan

Takeshi Tomoe