发明名称 |
X-ray equalization filter |
摘要 |
An object (22) is positioned on a patient support (25) between an x-ray source (10) and an x-ray detector assembly (15). The x-ray source (10) is selectively activated to transmit an x-ray beam (20) through an imaging region (32) to the x-ray detector assembly (15). Positioning of the object (22) on the patient support (25) is such that a gap 33 exists in the imaging region (32) through which x-rays may pass unattenuated. An x-ray equalization filter (30) is introduced into the gap 33 and substantially conforms to its shape. The equalization filter (30) comprises a fluid medium disposed in a flexible receptacle. The fluid medium contains x-ray attenuating material suspended in a gel base. Placement of the equalization filter (30) in the gap reduces the number of unattenuated x-rays reaching the x-ray detector assembly (15) thereby enhancing image quality.
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申请公布号 |
US6108403(A) |
申请公布日期 |
2000.08.22 |
申请号 |
US19980063767 |
申请日期 |
1998.04.21 |
申请人 |
PICKER INTERNATIONAL, INC. |
发明人 |
COOPER, III, VIRGIL N.;LIN, ZHONGMIN |
分类号 |
A61B6/03;G21K1/10;(IPC1-7):G21K3/00 |
主分类号 |
A61B6/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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