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。

公开(公告)号：US20100303209A1

公开(公告)日：2010-12-02

申请号：US12808695

申请日：2008-12-16

申请人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

发明人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

IPC分类号： H05G1/02

CPC分类号： A61B6/56 ,  A61B6/035 ,  A61B6/4291

摘要： The invention relates to a rotor comprising a radiation source having a focal spot for radiating beam towards a subject, detection means for generating signals responsive to energy attenuation of said beam and a circular body having a cavity for housing the radiation source, and a circle arc-shaped surface on which the detection means are mounted. The circle arc-shaped surface is placed opposite to the cavity with respect to the subject, said cavity comprising an inside surface mounted with a shield for shielding the radiation not towards the subject. In this way, the conventional housing for radiation source and shielding are removed, resulting in reduction of focal spot motion caused by motion of the conventional housing. Furthermore, this invention proposes to mount the detection means directly on the circular body without an intermediate structural housing that reduces the detector modules motion relative to the focal spot.

摘要翻译： 本发明涉及一种包括辐射源的转子，该辐射源具有用于朝向被摄体辐射光束的焦点，用于产生响应于所述光束的能量衰减的信号的检测装置和具有用于容纳辐射源的空腔的圆形体，以及圆弧 形状的表面上安装有检测装置。 圆弧形表面相对于被检体与空腔相对放置，所述空腔包括安装有用于屏蔽辐射而不是朝向被检者的屏蔽的内表面。 以这种方式，用于辐射源和屏蔽的常规外壳被去除，导致由常规壳体的运动引起的焦点运动减少。 此外，本发明提出将检测装置直接安装在圆形主体上，而没有中间结构壳体，其减小了检测器模块相对于焦斑的运动。

公开(公告)号：US09314220B2

公开(公告)日：2016-04-19

申请号：US12808695

申请日：2008-12-16

申请人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

发明人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

IPC分类号： A61B6/00 ,  A61B6/03

CPC分类号： A61B6/56 ,  A61B6/035 ,  A61B6/4291

摘要： The invention relates to a rotor comprising a radiation source having a focal spot for radiating beam towards a subject, detection means for generating signals responsive to energy attenuation of said beam and a circular body having a cavity for housing the radiation source, and a circle arc-shaped surface on which the detection means are mounted. The circle arc-shaped surface is placed opposite to the cavity with respect to the subject, said cavity comprising an inside surface mounted with a shield for shielding the radiation not towards the subject. In this way, the conventional housing for radiation source and shielding are removed, resulting in reduction of focal spot motion caused by motion of the conventional housing. Furthermore, this invention proposes to mount the detection means directly on the circular body without an intermediate structural housing that reduces the detector modules motion relative to the focal spot.

摘要翻译： 本发明涉及一种包括辐射源的转子，该辐射源具有用于朝向被摄体辐射光束的焦点，用于产生响应于所述光束的能量衰减的信号的检测装置和具有用于容纳辐射源的空腔的圆形体，以及圆弧 形状的表面上安装有检测装置。 圆弧形表面相对于被检体与空腔相对放置，所述空腔包括安装有用于屏蔽辐射而不是朝向被检者的屏蔽的内表面。 以这种方式，用于辐射源和屏蔽的常规外壳被去除，导致由常规壳体的运动引起的焦点运动减少。 此外，本发明提出将检测装置直接安装在圆形主体上，而没有中间结构壳体，其减小了检测器模块相对于焦斑的运动。