Hitachi Medical Corporation

Hiroshi Abe

Chuji Tomita

Mikio Mochitate

Hideki Kohno

Eiichi Makino

Takeshi Yano

Yoshikazu Igeta

Katashi Shimazu

A control apparatus for controlling movement of a table supporting an object under inspection in a medical diagnosis system includes a driving power unit for moving the table, a position detector for outputting a signal indicating a position of the table, a positioning servo-control unit for controlling the driving power unit so that the detected position signal coincides with a given desired value, a manipulating force detector for outputting a force signal corresponding to a manipulating force applied by an operator, a force-to-position conversion unit for converting the force signal into a position change quantity for the table, a force control unit for controlling the driving power unit in accordance with the position change quantity so long as the manipulating force is being detected, and a change-over unit for selecting either the positioning servo-control unit or the force control unit in response to operation of the operator.

Apparatus and method for controlling table in medical diagnosis system

An X-ray examination apparatus includes an X-ray diagnosis apparatus (first imaging area), an X-ray CT apparatus (second imaging area), a bed, and the X-ray diagnosis apparatus and the X-ray CT apparatus are arranged along a path of movement of a top plate of the bed in such a manner that the first and second imaging areas are spaced a predetermined distance from each other in a path of movement of the top plate. There is provided a top plate reciprocal movement control means which through operations of switches moves the top plate forward and backward between a first top plate position where a desired part of the patient is positioned at the first imaging area and a second top plate position where the top plate is spaced from the first top plate position toward the X-ray CT apparatus by a distance corresponding to the distance between the first and second imaging areas so that in the reciprocal movement of the two apparatuses, the top plate can be stopped at the first and second top plate position.

X-ray examination apparatus

A scanning device for use in axial transverse tomographic apparatus, arranged so that a support which carries thereon an X-ray source and its associated detector is mounted on a rotary disk for reciprocating linear movements, and that this rotary disk is caused to rotate through a certain angle at a time for each change of direction of the linear movements of the support. The support is moved at a plurality of different speeds. Either a single or a plurality of damping means are arranged so as to reduce the speed of movement of the support and then to accelerate this speed in association with the movement speed thereof at any changing of direction of movement of this support.

Scanning device for use in axial transverse tomographic apparatus

A scanning apparatus for cross-sectional inspection equipment comprising a rotatable disc supporting an X-ray source and a detector. The rotation of this disc is quickly braked as a coil spring provided on a speed accelerating and reducing means is compressed. The start of rotation of this disc rapidly gains the required rotation speed by the recovering force of the same compressed coil spring. A cable extending from various devices including the X-ray source and the detector provided on the rotatable disc is releasably wound around a hollow drum provided on this disc. The rotation force produced in the rotatable disc by this cable is off-set by a rotation force applied in an opposite direction to this disc.

Scanning apparatus for cross-sectional inspection equipment

A scanning apparatus for cross-sectional inspection equipment in which an X-ray source and a detector, which are arranged facing each other with an object in between, reciprocate along and rotate about a required cross-sectional plane of the object. The X-ray source and detector are mounted on a movable frame which is provided on a rotating disc and reciprocate, after being rotated through a small rotating-angle of the rotating disc by means of one drive source and mechanical mechanism. Thus, accurate operating timing and simplified construction are achieved.

Growing community of inventors

Kashiwa, Japan

Hiroshi Abe