| US 7,577,232 B2 | ||
| Medical X-ray imaging apparatus and X-ray detector for using the same | ||
| Akifumi Tachibana, Kyoto (Japan); Masanobu Yoshida, Kyoto (Japan); Takahiro Yoshimura, Kyoto (Japan); and Masakazu Suzuki, Kyoto (Japan) | ||
| Assigned to J. Morita Manufacturing Corporation, Kyoto (Japan) | ||
| Filed on Apr. 20, 2006, as Appl. No. 11/407,504. | ||
| Claims priority of application No. 2005-125809 (JP), filed on Apr. 22, 2005. | ||
| Prior Publication US 2006/0256921 A1, Nov. 16, 2006 | ||
| Int. Cl. A61B 6/14 (2006.01); H05G 1/58 (2006.01) | ||
| U.S. Cl. 378—39 [378/38; 378/116] | 19 Claims |
| 1. A medical X-ray imaging apparatus comprising
a rotary means rotatable relative to an object to be examined,
an X-ray generator provided at one side of the rotary means, and
an X-ray detecting portion provided at the other side of the rotary means so as to face the X-ray generator,
wherein an X-ray detector is provided in said X-ray detecting portion or is detachably mounted in said X-ray detecting portion,
and
said X-ray detector is provided with an imaging portion comprised of a plane electric imaging means extending in a two-dimensional
direction to detect an X-ray cone beam used for X-ray CT,
and an imaging portion positioning means for moving up and down said imaging portion in said X-ray detector,
and wherein said medical X-ray imaging apparatus is further provided with a mode switching means for selecting a panoramic
radiography mode and an X-ray CT mode, wherein an X-ray slit beam for panoramic radiography is irradiated in said panoramic
radiography mode and said X-ray cone beam for said X-ray CT is irradiated in said X-ray CT mode,
and wherein said X-ray generator is further provided with an irradiating direction changing means for changing the irradiating
direction of the X-ray cone beam for said X-ray CT to be emitted up and down therefrom corresponding to a position of said
imaging portion in said X-ray CT mode by moving up and down a slit for forming an X-ray beam as said X-ray cone beam for X-ray
CT positioned at an X-ray radiation port of said X-ray generator.
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