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公开(公告)号:US20070030004A1
公开(公告)日:2007-02-08
申请号:US10558768
申请日:2004-05-19
申请人: William Amor , Dennis Everett , Jerome Alden , Robert Henderson , Terrence Doyle , Ronald Sharpless , Gerardus Mulder , Gerardus Peeren
发明人: William Amor , Dennis Everett , Jerome Alden , Robert Henderson , Terrence Doyle , Ronald Sharpless , Gerardus Mulder , Gerardus Peeren
IPC分类号: G01V3/00
CPC分类号: G01R33/3873
摘要: A magnetic resonance imaging scanner includes a generally cylindrical main magnet assembly (10) that defines a cylinder axis (16). A first set of shims (60) are rigidly positioned inside the magnet assembly (10) at about a first distance (d1) relative to the cylinder axis (16). A second set of shims (62) are rigidly positioned inside the main magnet assembly (10) at about a second distance (d2) relative to the cylinder axis (16). The second distance (d2) is different from the first distance (d1). A generally cylindrical radio frequency coil (26) is arranged inside the main magnet assembly (10) at about a third distance (d3) relative to the cylinder axis (16). A plurality of gradient coils (20) are arranged inside the main magnet assembly (10) at about a fourth distance (d4) relative to the cylinder axis (16).
摘要翻译: 磁共振成像扫描仪包括限定气缸轴线(16)的大致圆柱形的主磁体组件(10)。 第一组垫片(60)相对于气缸轴线(16)以大约第一距离(d 1)刚性地定位在磁体组件(10)的内部。 第二组垫片(62)相对于气缸轴线(16)以大约第二距离(d 2)刚性地定位在主磁体组件(10)的内部。 第二距离(d 2)与第一距离(d 1)不同。 大致圆柱形的射频线圈(26)相对于气缸轴线(16)以大约第三距离(d 3)布置在主磁体组件(10)的内部。 多个梯度线圈(20)相对于气缸轴线(16)以大约第四距离(d 4)布置在主磁体组件(10)的内部。
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公开(公告)号:US20060142655A1
公开(公告)日:2006-06-29
申请号:US10560695
申请日:2004-06-01
申请人: Bradford Petot , Gordon DeMeester , William Amor
发明人: Bradford Petot , Gordon DeMeester , William Amor
IPC分类号: A61B5/05
CPC分类号: A61B5/0555 , A61B5/704 , A61B5/706 , A61B6/04 , A61B6/0407 , A61B6/0492 , G01R33/28 , G01R33/56375
摘要: An MRI apparatus is provided. The MRI apparatus includes a main magnet (12) for generating a main magnetic field in an examination region, a plurality of gradient magnets (16) for generating magnetic field gradients in the main magnetic field, a radio frequency coil (22) for transmitting radio frequency signals into the examination region and exciting magnetic resonance in a subject disposed therein, and a radio frequency coil for receiving the magnetic resonance signals from the subject. The MRI apparatus also includes subject support (52) for supporting the subject, a position controller (60) for controlling the position of the subject support within the examination region, and a position encoder (53) for directly measuring the position of the subject support.
摘要翻译: 提供MRI装置。 MRI装置包括用于在检查区域中产生主磁场的主磁体(12),用于在主磁场中产生磁场梯度的多个梯度磁体(16),用于发射无线电的射频线圈 频率信号进入检查区域并激励被设置在其中的被摄体的磁共振,以及射频线圈,用于接收来自被检体的磁共振信号。 MRI装置还包括用于支撑被检体的被检体支架(52),用于控制检查区域内的被检体的位置的位置控制器(60),以及用于直接测量被检体支架 。
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