Rigaku Corporation

Ayuta Yamada

Yukihiro Hara

Yuichi Kodama

Manabu Noguchi

Kiyoshi Akiyama

Small-sized X-ray CT apparatus obtaining a cross-section or 3D image of a sample, using X-rays. Included: an X-ray generating apparatus irradiating X-rays on the sample; an X-ray detecting device detecting X-rays passing through the sample; and a device processing a detection signal from the X-ray detecting device, to re-structure the cross-section or 3D image of the sample; an X-ray shielding member having an opening portion for introducing the sample therein on one end surface and being treated with an X-ray protection process on an entire periphery thereof; and a means rotationally driving the X-ray shielding member, wherein the X-ray generating apparatus and the X-ray detecting device are treated with the X-ray protection process, respectively, and are fixed on a wall surface of the X-ray shielding member at positions opposing to each other, putting an rotation axis thereof therebetween, and thereby constructed with the X-ray shielding member in one body.

X-ray CT apparatus

A CT data processing apparatus and a CT data processing method capable of separating a subcutaneous fat region from a visceral fat region accurately and efficiently in CT data are provided. The CT data processing apparatus includes a center calculation part that calculates a body centerof an examinee on tomographic CT data, a start point setting part that identifies a vertebral column positionon the tomographic CT data and sets a start point on a muscular layeron the opposite side of the vertebral column positionwith respect to the body center, a muscular layer determination part that determines whether or not the muscular layeris present in a first range, and when it is determined that the muscular layeris present in the first range, further setting a point on the muscular layerin the first rangeas a new first reference pointand thus determining whether or not the muscular layeris present in the first range, while moving the first reference pointfrom the start point, and a separation line calculation part that calculates a separation line so that the separation line passes through the first reference points

CT data processing apparatus and CT data processing method

In an X-ray CT apparatus, an X-ray source and an X-ray detector mounted in a guide arm are freely movable in such a direction as to approach to and separate from a sample. With respect to this movement, the center of gravity of the whole containing respective constituent elements mounted in the guide arm is kept on the rotational axis by a weight balance adjusting mechanism. The weight balance adjusting mechanism contains a movable weight which is freely movable to the guide arm. The movement of the movable weight is controlled so that a difference between the rotational moment around the rotational axis is offset and substantially equal to zero. The moving passage of the movable weight is set on a straight line which is parallel to the moving direction of the X-ray source and the X-ray detector and does not pass through the rotational axis.

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Ome, Japan

Ayuta Yamada