X-ray computed tomographic apparatus
View Patent ↗An X-ray computed tomographic apparatus includes a cylindrical rotary base supported so as to be rotatable about a rotational axis, an X-ray tube unit mounted on the rotary base, an X-ray detecting unit mounted on the rotary base, and a reinforcing ring fixed to an end of the rotary base, and having a greater rigidity than the rotary base.
1. An X-ray computed tomographic apparatus comprising:
a cylindrical ring-shaped aluminum rotary base supported so as to be rotatable about a rotational axis;
an X-ray tube mounted on the rotary base adjacent an inner surface of the rotary base;
an X-ray detector mounted on the rotary base adjacent an inner surface of the rotary base, with at least one of the barycenter of the X-ray tube and the barycenter of the X-ray detector being shifted from the center of the rotary base; and
a reinforcing ring fixed to the rotary base, and having a greater rigidity than the rotary base.
2. The X-ray computed tomographic apparatus according to claim 1 ,
wherein the X-ray tube and the X-ray detector are disposed in positions offset toward the same side from a central part of the rotary base in the axial direction thereof, and
the reinforcing ring is provided at an end, which is close to the X-ray tube and the X-ray detector, of the ends of the rotary base in the axial direction thereof.
3. The X-ray computed tomographic apparatus according to claim 1 ,
wherein the reinforcing ring is fixed to an end face of the rotary base.
4. The X-ray computed tomographic apparatus according to claim 1 ,
wherein the reinforcing ring is fixed to an outer peripheral face of the rotary base.
5. The X-ray computed tomographic apparatus according to claim 1 ,
wherein the reinforcing ring is formed of any one of iron, stainless steel, and titanium.
6. An X-ray computed tomographic apparatus comprising:
a cylindrical ring-shaped aluminum rotary base supported so as to be rotatable about a rotational axis;
an X-ray tube mounted on the rotary base adjacent an inner surface of the rotary base;
an X-ray detector mounted on the rotary base adjacent an inner surface of the rotary base, with at least one of the barycenter of the X-ray tube and the barycenter of the X-ray detector being shifted from the center of the rotary base; and
a reinforcing member fabricated of a material having a greater rigidity than the rotary base, and attached to an end of the rotary base to suppress deflection of the rotary base.
7. An X-ray computed tomographic apparatus having a rotating part which rotates in order to acquire an X-ray tomographic image of a subject, the rotating part comprising:
a rotary base including a ring-shaped flat plate centering on a rotational axis of the rotating part, and a cylinder formed at an outer peripheral end of the flat plate;
an X-ray tube which radiates X-rays to the subject on any one surface of the flat plate; and
a reinforcing member attached to the rotary base on the other surface of the flat plate, and constituting a double structure along with the rotary base,
wherein a hollow part is formed between the reinforcing member and the flat plate.
8. The X-ray computed tomographic apparatus according to claim 7 ,
wherein the reinforcing member is joined to the rotary base in the vicinity of inner and outer peripheral ends of the rotary base.
9. The X-ray computed tomographic apparatus according to claim 7 , wherein the reinforcing member has a ring shape.
10. The X-ray computed tomographic apparatus according to claim 7 ,
wherein the X-ray tube is attached to an inner peripheral face of the cylinder.