公开(公告)号：US20100219347A1

公开(公告)日：2010-09-02

申请号：US12670256

申请日：2008-06-23

申请人： Volkmar Schulz ,  Torsten J. Solf ,  Gordon D. Demeester ,  Michael A. Morich

发明人： Volkmar Schulz ,  Torsten J. Solf ,  Gordon D. Demeester ,  Michael A. Morich

IPC分类号： G01T1/164 ,  G01R33/28

CPC分类号： G01T1/1603

摘要： An imaging system includes positron emission tomography (PET) detectors (30) shrouded by broadband galvanic isolation (99) and coincidence detection electronics (50, 50ob), or other radiation detectors. A magnetic resonance scanner includes a main magnet (12, 14) and magnetic field gradient assembly (20, 20′, 22, 24) configured to acquire imaging data from a magnetic resonance examination region at least partially overlapping the examination region surrounded by the PET detectors. A radio frequency coil (80, 100) has plurality of conductors (66, 166) and a radio frequency screen (88, 188, 188EB, 188F) substantially surrounding the conductors to shield the coil at the magnetic resonance frequency. The radiation detectors are outside of the radio frequency screen. Magnetic resonance-compatible radiation collimators or shielding (60, 62) containing an electrically non-conductive and non-ferromagnetic heavy atom oxide material are disposed with the radiation detectors.

摘要翻译： 一种成像系统包括由宽带电流隔离（99）和重合检测电路（50,50ob）或其他辐射检测器覆盖的正电子发射断层摄影（PET）检测器（30）。 磁共振扫描仪包括主磁体（12,14）和磁场梯度组件（20,20'，22,24），其被配置为从至少部分地与由PET包围的检查区域重叠的磁共振检查区域获取成像数据 探测器 射频线圈（80,100）具有基本上围绕导体以屏蔽线圈的磁共振频率的多个导体（66,166）和射频屏（88,188,188EB，188F）。 辐射探测器在射频屏幕之外。 磁辐射准直仪或包含非导电和非铁磁重原子氧化物材料的屏蔽（60,62）与辐射探测器一起设置。

公开(公告)号：US08525116B2

公开(公告)日：2013-09-03

申请号：US12670256

申请日：2008-06-23

申请人： Volkmar Schulz ,  Torsten J. Solf ,  Gordon D. DeMeester ,  Michael A. Morich

发明人： Volkmar Schulz ,  Torsten J. Solf ,  Gordon D. DeMeester ,  Michael A. Morich

IPC分类号： G01T1/164 ,  G01T1/24 ,  A61B5/05

CPC分类号： G01T1/1603

摘要： An imaging system includes positron emission tomography (PET) detectors (30) shrouded by broadband galvanic isolation (99) and coincidence detection electronics (50, 50ob), or other radiation detectors. A magnetic resonance scanner includes a main magnet (12, 14) and magnetic field gradient assembly (20, 20′, 22, 24) configured to acquire imaging data from a magnetic resonance examination region at least partially overlapping the examination region surrounded by the PET detectors. A radio frequency coil (80, 100) has plurality of conductors (66, 166) and a radio frequency screen (88, 188, 188EB, 188F) substantially surrounding the conductors to shield the coil at the magnetic resonance frequency. The radiation detectors are outside of the radio frequency screen. Magnetic resonance-compatible radiation collimators or shielding (60, 62) containing an electrically non-conductive and non-ferromagnetic heavy atom oxide material are disposed with the radiation detectors.

摘要翻译： 一种成像系统包括由宽带电流隔离（99）和重合检测电路（50,50ob）或其他辐射检测器覆盖的正电子发射断层摄影（PET）检测器（30）。 磁共振扫描仪包括主磁体（12,14）和磁场梯度组件（20,20'，22,24），其被配置为从至少部分地与由PET包围的检查区域重叠的磁共振检查区域获取成像数据 探测器 射频线圈（80,100）具有基本上围绕导体以屏蔽线圈的磁共振频率的多个导体（66,166）和射频屏（88,188,188EB，188F）。 辐射探测器在射频屏幕之外。 磁辐射准直仪或包含非导电和非铁磁重原子氧化物材料的屏蔽（60,62）与辐射探测器一起设置。

公开(公告)号：US08378677B2

公开(公告)日：2013-02-19

申请号：US12667573

申请日：2008-06-23

申请人： Michael A. Morich ,  Gordon D. Demeester ,  Jerome J. Griesmer ,  Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

发明人： Michael A. Morich ,  Gordon D. Demeester ,  Jerome J. Griesmer ,  Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

IPC分类号： G01V3/00

CPC分类号： G01T1/1603 ,  G01R33/3806 ,  G01R33/3856 ,  G01R33/481

摘要： In a hybrid PET-MR system, PET detector elements (30) are added in the bore (14), in close proximity to the gradient coils (16). Fluid coolant is supplied to transfer heat from the PET detector elements (30). Thermal insulation (80) insulates the fluid coolant and the PET detector elements (30) from the gradient coils (16). In some embodiments, a first coolant path (90) is in thermal communication with the electronics, a second coolant path (92) is in thermal communication with the light detectors, and a thermal barrier (94, 96) is arranged between the first and second coolant paths such that the first and second coolant paths can be at different temperatures (Te, Td). In some embodiments a sealed heat pipe (110) is in thermal communication with a heat sink such that working fluid in the heat pipe undergoes vaporization/condensation cycling to transfer heat from the detector elements to the heat sink.

摘要翻译： 在混合PET-MR系统中，将PET检测器元件（30）添加到孔（14）中，靠近梯度线圈（16）。 供应流体冷却剂以从PET检测器元件（30）传递热量。 绝热（80）使流体冷却剂和PET检测器元件（30）与梯度线圈（16）绝缘。 在一些实施例中，第一冷却剂路径（90）与电子设备热连通，第二冷却剂路径（92）与光检测器热连通，并且热障（94,96）布置在第一和第 第二冷却剂路径使得第一和第二冷却剂路径可处于不同的温度（Te，Td）。 在一些实施例中，密封的热管（110）与散热器热连通，使得热管中的工作流体经历蒸发/冷凝循环以将热量从检测器元件传递到散热器。

公开(公告)号：US20110018541A1

公开(公告)日：2011-01-27

申请号：US12864882

申请日：2009-02-02

申请人： Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

发明人： Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

IPC分类号： G01R33/36 ,  G01T1/164

CPC分类号： G01T1/1603 ,  G01R33/481

摘要： An imaging system comprises: a magnetic resonance scanner (30) having a cylindrical bore (36) defining a cylinder axis (DA), the magnetic resonance scanner having a gradient coil (10, 10′) defining an isocenter (64) within the bore and an isoplane (66) passing through the isocenter and oriented transverse to the cylinder axis; a ring of radiation detectors (60a, 60b, 60′) arranged concentric with the cylindrical bore and configured to detect radiation emanating from within the bore; and a generally annular electronic circuit board (62, 62′) arranged concentric with the cylindrical bore and centered on the isoplane, the generally annular electronic circuit board operatively connected with the ring of radiation detectors to generate electrical signals indicative of detection of radiation by the ring of radiation detectors.

摘要翻译： 成像系统包括：磁共振扫描器（30），其具有限定气缸轴线（DA）的圆柱孔（36），所述磁共振扫描器具有在所述孔内限定等角点（64）的梯度线圈（10,10'） 和穿过等角点并横向于气缸轴线定向的等平面（66）; 辐射检测器环（60a，60b，60'）与所述圆柱形孔同心设置，并被配置为检测从所述孔内发出的辐射; 以及与所述圆柱孔同心布置并且位于所述等平面上的大致环形的电子电路板（62,62'），所述大体上环形的电子电路板与辐射探测器环可操作地连接，以产生指示由 辐射探测器环。

公开(公告)号：US08547100B2

公开(公告)日：2013-10-01

申请号：US12864882

申请日：2009-02-02

申请人： Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

发明人： Torsten J. Solf ,  Volkmar Schulz ,  Bjoern Weissler

IPC分类号： G01R33/48

CPC分类号： G01T1/1603 ,  G01R33/481

摘要： An imaging system comprises: a magnetic resonance scanner (30) having a cylindrical bore (36) defining a cylinder axis (DA), the magnetic resonance scanner having a gradient coil (10, 10′) defining an isocenter (64) within the bore and an isoplane (66) passing through the isocenter and oriented transverse to the cylinder axis; a ring of radiation detectors (60a, 60b, 60′) arranged concentric with the cylindrical bore and configured to detect radiation emanating from within the bore; and a generally annular electronic circuit board (62, 62′) arranged concentric with the cylindrical bore and centered on the isoplane, the generally annular electronic circuit board operatively connected with the ring of radiation detectors to generate electrical signals indicative of detection of radiation by the ring of radiation detectors.

摘要翻译： 成像系统包括：磁共振扫描器（30），其具有限定气缸轴线（DA）的圆柱孔（36），所述磁共振扫描器具有在所述孔内限定等角点（64）的梯度线圈（10,10'） 和穿过等角点并横向于气缸轴线定向的等平面（66）; 辐射检测器环（60a，60b，60'）与所述圆柱形孔同心设置，并被配置为检测从所述孔内发出的辐射; 以及与所述圆柱孔同心布置并且位于所述等平面上的大致环形的电子电路板（62,62'），所述大体上环形的电子电路板与辐射探测器环可操作地连接，以产生指示由 辐射探测器环。

公开(公告)号：US20090250616A1

公开(公告)日：2009-10-08

申请号：US12304135

申请日：2007-05-29

申请人： Torsten J. Solf ,  Peter Fischer

发明人： Torsten J. Solf ,  Peter Fischer

IPC分类号： G01T1/166 ,  G01R35/00 ,  H03H11/26 ,  G01J5/10

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G04F10/005

摘要： In a radiation detector (10) for a time of flight positron emission tomography (PET) scanner (2), a radiation sensitive member (20) generates a signal (22) indicative of a radiation detection event. A time to digital converter (34) includes digital delay elements (40) operatively interconnected as a ring oscillator (36, 36′) and readout circuitry (50, 52, 60, 82, 84, 86, 88) configured to generate a timestamp for the radiation detection event based at least on a state of the ring oscillator when the signal is generated. Delay trim elements (46) operatively connected to the digital delay elements set a substantially common delay for the digital delay elements. Additionally or alternatively, the digital delay elements (40) include readout buffers (48′) having transition times substantially longer than a delay of the digital delay elements, analog to digital converters (82, 84) digitize values of the delay elements, and decoding circuitry (86, 88) computes the state of the ring oscillator (36′) based on the digitized values.

摘要翻译： 在用于飞行时间正电子发射断层摄影（PET）扫描仪（2）的放射线检测器（10）中，辐射敏感部件（20）产生指示辐射检测事件的信号（22）。 时间到数字转换器（34）包括作为环形振荡器（36,36'）可操作地互连的数字延迟元件（40）和被配置为生成时间戳的读出电路（50,52,60,82,84,86,88） 用于当产生信号时至少基于环形振荡器的状态的辐射检测事件。 可操作地连接到数字延迟元件的延迟微调元件（46）为数字延迟元件设置基本上公用的延迟。 附加地或替代地，数字延迟元件（40）包括读出缓冲器（48'），其具有比数字延迟元件的延迟更多的转换时间，模数转换器（82,84）数字化延迟元件的值，并且解码 电路（86,88）基于数字化值来计算环形振荡器（36'）的状态。

公开(公告)号：US07750305B2

公开(公告)日：2010-07-06

申请号：US12304135

申请日：2007-05-29

申请人： Torsten J. Solf ,  Peter Fischer

发明人： Torsten J. Solf ,  Peter Fischer

IPC分类号： G01T1/166 ,  H03L7/08

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G04F10/005

摘要： In a radiation detector (10) for a time of flight positron emission tomography (PET) scanner (2), a radiation sensitive member (20) generates a signal (22) indicative of a radiation detection event. A time to digital converter (34) includes digital delay elements (40) operatively interconnected as a ring oscillator (36, 36′) and readout circuitry (50, 52, 60, 82, 84, 86, 88) configured to generate a timestamp for the radiation detection event based at least on a state of the ring oscillator when the signal is generated. Delay trim elements (46) operatively connected to the digital delay elements set a substantially common delay for the digital delay elements. Additionally or alternatively, the digital delay elements (40) include readout buffers (48′) having transition times substantially longer than a delay of the digital delay elements, analog to digital converters (82, 84) digitize values of the delay elements, and decoding circuitry (86, 88) computes the state of the ring oscillator (36′) based on the digitized values.

摘要翻译： 在用于飞行时间正电子发射断层摄影（PET）扫描仪（2）的放射线检测器（10）中，辐射敏感部件（20）产生指示辐射检测事件的信号（22）。 时间到数字转换器（34）包括作为环形振荡器（36,36'）可操作地互连的数字延迟元件（40）和被配置为生成时间戳的读出电路（50,52,60,82,84,86,88） 用于当产生信号时至少基于环形振荡器的状态的辐射检测事件。 可操作地连接到数字延迟元件的延迟微调元件（46）为数字延迟元件设置基本上公用的延迟。 附加地或替代地，数字延迟元件（40）包括读出缓冲器（48'），其具有比数字延迟元件的延迟更多的转换时间，模数转换器（82,84）数字化延迟元件的值，并且解码 电路（86,88）基于数字化值来计算环形振荡器（36'）的状态。