发明名称 |
MULTI-RADIATION SOURCE X-RAY CT APPARATUS |
摘要 |
A multi-radiation source X-ray CT apparatus comprises a sensor array consisting of sensors arranged fixedly, a vacuum chamber arranged fixedly, and an X-ray generating unit provided inside the vacuum chamber. The X-ray generating unit comprises a cathode so arranged fixedly in the vacuum chamber in such a way as to surround the sensor array to emit an electron beam, an anode arranged fixedly in the vacuum chamber in such a way as to surround the sensor array to emit X rays upon reception of the electron beams, a gate array consisting of grid electrodes which are densely arranged fixedly between the cathode and the anode and having holes to allow the passage of the electron beams, a power source for impressing a bias voltage to the grid electrodes of the gate arrays, and a control means for selecting a grid electrode suitable for imaging out of the gate array depending on an imaging part of subject, and for controlling the power feed from the power source so as to cancel the bias voltage impressed on the selected grid electrode.
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申请公布号 |
WO02067779(A1) |
申请公布日期 |
2002.09.06 |
申请号 |
WO2002JP01837 |
申请日期 |
2002.02.28 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD.;MIHARA, KAZUMASA;URANO, SUSUMU;HORI, KEIICHI;OGURA, SHIN |
发明人 |
MIHARA, KAZUMASA;URANO, SUSUMU;HORI, KEIICHI;OGURA, SHIN |
分类号 |
A61B6/03;H01J35/02;H01J35/04;H01J35/08;(IPC1-7):A61B6/03 |
主分类号 |
A61B6/03 |
代理机构 |
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代理人 |
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地址 |
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