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US 6,480,569 B2Granted
X-ray control apparatus and X-ray diagnostic apparatus
AssigneeKabushiki Kaisha Toshiba
InventorHideki Sato
Life of this patent
Estimating the term…
Abstract
In an X-ray diagnostic apparatus, the rotation anode of an X-ray tube is placed in rotation at a given low speed prior to examination of an object under examination by fluoroscopy. For fluoroscopy, the rotational speed of the rotation anode is switched from the low speed to a given medium speed. For X-ray photography, the rotational speed of the rotation anode is switched from the medium speed to a given high speed.
Claims21
An X-ray control apparatus comprising:
- an X-ray tube having a rotation anode built in for irradiating an object under examination with X-rays;
- select means for selecting the rotational speed of said rotation anode of said X-ray tube from among a low speed, a medium speed, and a high speed;
- and
- drive means for driving said rotation anode into rotation at the rotational speed selected by said select means, and
- wherein, for X-ray irradiation by said X-ray tube, said select means selects either the medium speed or the high speed.
2 more elements
An X-ray diagnostic apparatus comprising:
- an X-ray tube having a rotation anode built in for irradiating an object under examination with X-rays;
- select means for selecting the rotational speed of the rotation anode of said X-ray tube from among a low speed, a medium speed, and a high speed;
- and
- drive means for driving said rotation anode into rotation at the rotational speed selected by said select means, and
- wherein, for X-ray irradiation by said X-ray tube, said select means selects either the medium speed or the high speed.
2 more elements
An X-ray diagnostic apparatus comprising:
- an X-ray tube having a rotation anode built in for irradiating an object under examination with X-rays;
- select means for selecting the rotational speed of said rotation anode of said X-ray tube from a first speed and a second speed higher than the first speed;
- and
- drive means for driving said rotation anode into rotation at the rotational speed selected by said select means, and
- wherein, for X-ray irradiation by said X-ray tube, said select means selects the first speed for fluoroscopy and either the first speed or the second speed for X-ray photography.
2 more elements
Dependencies are inferred from the claim text.