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1.发明公开COMPUTER TOMOGRAPH WITH A DETECTOR FOLLOWING THE MOVEMENT OF A PIVOTABLE X-RAY SOURCE 审中-公开与遵循x射线源旋转钩的运动的检测器计算机断层摄影
公开(公告)号：EP1485697A2
公开(公告)日：2004-12-15
申请号：EP03721394.9
申请日：2003-03-18
IPC分类号： G01N23/04
CPC分类号： A61B6/4452 , A61B6/032 , A61B6/06 , A61B6/4021 , A61B6/4085 , A61B6/4233 , A61B6/4405 , G01N23/043 , G01N23/046 , G01N2223/419
摘要： An imaging apparatus and related method comprising a source that projects a beam of radiation in a first trajectory; a detector located a distance from the source and positioned to receive the beam of radiation in the first trajectory; an imaging area between the source and the detector, the radiation beam from the source passing through a portion of the imaging area before it is received at the detector; a detector positioner that translates the detector to a second position in a first direction that is substantially normal to the first trajectory; and a beam positioner that alters the trajectory of the radiation beam to direct the beam onto the detector located at the second position. The radiation source can be an x-ray cone-beam source, and the detector can be a two-dimensional flat-panel detector array.
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公开(公告)号：EP1511423A1
公开(公告)日：2005-03-09
申请号：EP03739079.6
申请日：2003-06-11
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/035 , A61B6/4405 , A61N5/10 , A61N5/1081 , A61N5/1082 , G01N2223/419
摘要： An x-ray scanning imaging apparatus with a rotatably fixed generally O-shaped gantry ring, which is connected on one end of the ring to support structure, such as a mobile cart, ceiling, floor, wall, or patient table, in a cantilevered fashion. The circular gantry housing remains rotatably fixed and carries an x-ray image-scanning device that can be rotated inside the gantry around the object being imaged either continuously or in a step-wise fashion. The ring can be connected rigidly to the support, or can be connected to the support via a ring positioning unit that is able to translate or tilt the gantry relative to the support on one or more axes. Multiple other embodiments exist in which the gantry housing is connected on one end only to the floor, wall, or ceiling. The x-ray device is particularly useful for two-dimensional multi-planar x-ray imaging and/or three-dimensional computed tomography (CT) imaging applications.
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3.发明公开
公开(公告)号：EP1482837A2
公开(公告)日：2004-12-08
申请号：EP03744696.0
申请日：2003-03-13
CPC分类号： A61B6/4441 , A61B6/02 , A61B6/035 , A61B6/4405 , A61B6/56
摘要： Systems and methods for obtaining two-dimensional images of an object, such as a patient, in multiple projection planes. In one aspect, the invention advantageously permits quasi-simultaneous image acquisition from multiple projection planes using a single radiation source. An imaging apparatus comprises a gantry having a central opening for positioning an object to be imaged, a source of radiation that is rotatable around the interior of the gantry ring and which is adapted to project radiation onto said object from a plurality of different projection angles; and a detector system adapted to detect the radiation at each projection angle to acquire object images from multiple projection planes in a quasi-simultaneous manner. The gantry can be a substantially 'O-shaped' ring, with the source rotatable 360 degrees around the interior of the ring. The source can be an x-ray source, and the imaging apparatus can be used for medical x-ray imaging. The detector array can be a two-dimensional detector, preferably a digital detector.
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公开(公告)号：EP1531727B1
公开(公告)日：2010-06-16
申请号：EP03749090.1
申请日：2003-08-21
CPC分类号： A61B6/4429 , A61B6/032 , A61B6/4405 , A61B6/4441 , A61N5/1081
摘要： A robotically controlled five degree-of-freedom x-ray gantry positioning apparatus, which is connected to a mobile cart, ceiling, floor, wall, or patient table, is being disclosed. The positioning system can be attached to a cantilevered o-shaped or c-shaped gantry. The positioning system can precisely translate the attached gantry in the three orthogonal axes X-Y-Z and orient the gantry about the X-axis and Y-axis while keeping the center of the gantry fixed, (see Figure 1). The positioning apparatus provides both iso-centric and non iso-centric 'Tilt' and 'Wag' rotations of the gantry around the X-axis and Y-axis respectively. The iso-centric 'Wag' rotation is a multi-axis combination of two translations and one rotation. Additionally, a field of view larger than that provided by the detector is provided in pure AP (anterior/posterior) and lateral detector positions through additional combinations of multi-axis coordinated motion. Each axis can be manually controlled or motorized with position feedback to allow storage of gantry transformations. Motorized axes enable the gantry to quickly and accurately return to preset gantry positions and orientations. A system and method for enlarging the field of view of the object being imaged combines a rotation of the x-ray source and detector with a multi-axis translation of the gantry.
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公开(公告)号：EP1511423B1
公开(公告)日：2007-08-15
申请号：EP03739079.6
申请日：2003-06-11
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/035 , A61B6/4405 , A61N5/10 , A61N5/1081 , A61N5/1082 , G01N2223/419
摘要： An x-ray scanning imaging apparatus with a rotatably fixed generally O-shaped gantry ring, which is connected on one end of the ring to support structure, such as a mobile cart, ceiling, floor, wall, or patient table, in a cantilevered fashion. The circular gantry housing remains rotatably fixed and carries an x-ray image-scanning device that can be rotated inside the gantry around the object being imaged either continuously or in a step-wise fashion. The ring can be connected rigidly to the support, or can be connected to the support via a ring positioning unit that is able to translate or tilt the gantry relative to the support on one or more axes. Multiple other embodiments exist in which the gantry housing is connected on one end only to the floor, wall, or ceiling. The x-ray device is particularly useful for two-dimensional multi-planar x-ray imaging and/or three-dimensional computed tomography (CT) imaging applications.
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公开(公告)号：EP1531727A2
公开(公告)日：2005-05-25
申请号：EP03749090.1
申请日：2003-08-21
CPC分类号： A61B6/4429 , A61B6/032 , A61B6/4405 , A61B6/4441 , A61N5/1081
摘要： A robotically controlled five degree-of-freedom x-ray gantry positioning apparatus, which is connected to a mobile cart, ceiling, floor, wall, or patient table, is being disclosed. The positioning system can be attached to a cantilevered o-shaped or c-shaped gantry. The positioning system can precisely translate the attached gantry in the three orthogonal axes X-Y-Z and orient the gantry about the X-axis and Y-axis while keeping the center of the gantry fixed, (see Figure 1). The positioning apparatus provides both iso-centric and non iso-centric 'Tilt' and 'Wag' rotations of the gantry around the X-axis and Y-axis respectively. The iso-centric 'Wag' rotation is a multi-axis combination of two translations and one rotation. Additionally, a field of view larger than that provided by the detector is provided in pure AP (anterior/posterior) and lateral detector positions through additional combinations of multi-axis coordinated motion. Each axis can be manually controlled or motorized with position feedback to allow storage of gantry transformations. Motorized axes enable the gantry to quickly and accurately return to preset gantry positions and orientations. A system and method for enlarging the field of view of the object being imaged combines a rotation of the x-ray source and detector with a multi-axis translation of the gantry.
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公开(公告)号：EP1474040B1
公开(公告)日：2007-10-24
申请号：EP02794265.5
申请日：2002-12-12
IPC分类号： A61B6/03
CPC分类号： A61B6/4405 , A61B6/032 , A61B6/035 , A61B6/4411 , A61B6/4441
摘要： An x-ray scanning imaging apparatus with a generally O-shaped gantry ring, which has a segment that fully or partially detaches (or 'breaks') from the ring to provide an opening through which the object to be imaged may enter interior of the ring in a radial direction. The segment can then be re-attached to enclose the object within gantry. Once closed, the circular gantry housing remains orbitally fixed and carries an x-ray image-scanning device that can be rotated inside the gantry 360 degrees around the patient either continuously or in a step-wise fashion. The x-ray device is particularly useful for two-dimensional and/or three-dimensional computed tomography (CT) imaging applications.
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公开(公告)号：EP1474040A1
公开(公告)日：2004-11-10
申请号：EP02794265.5
申请日：2002-12-12
IPC分类号： A61B6/03
CPC分类号： A61B6/4405 , A61B6/032 , A61B6/035 , A61B6/4411 , A61B6/4441
摘要： An x-ray scanning imaging apparatus with a generally O-shaped gantry ring, which has a segment that fully or partially detaches (or 'breaks') from the ring to provide an opening through which the object to be imaged may enter interior of the ring in a radial direction. The segment can then be re-attached to enclose the object within gantry. Once closed, the circular gantry housing remains orbitally fixed and carries an x-ray image-scanning device that can be rotated inside the gantry 360 degrees around the patient either continuously or in a step-wise fashion. The x-ray device is particularly useful for two-dimensional and/or three-dimensional computed tomography (CT) imaging applications.
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9.发明授权
公开(公告)号：EP1482837B1
公开(公告)日：2005-09-14
申请号：EP03744696.0
申请日：2003-03-13
CPC分类号： A61B6/4441 , A61B6/02 , A61B6/035 , A61B6/4405 , A61B6/56
摘要： Systems and methods for obtaining two-dimensional images of an object, such as a patient, in multiple projection planes. In one aspect, the invention advantageously permits quasi-simultaneous image acquisition from multiple projection planes using a single radiation source. An imaging apparatus comprises a gantry having a central opening for positioning an object to be imaged, a source of radiation that is rotatable around the interior of the gantry ring and which is adapted to project radiation onto said object from a plurality of different projection angles; and a detector system adapted to detect the radiation at each projection angle to acquire object images from multiple projection planes in a quasi-simultaneous manner. The gantry can be a substantially 'O-shaped' ring, with the source rotatable 360 degrees around the interior of the ring. The source can be an x-ray source, and the imaging apparatus can be used for medical x-ray imaging. The detector array can be a two-dimensional detector, preferably a digital detector.
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