公开(公告)号：US20120112749A1

公开(公告)日：2012-05-10

申请号：US13286930

申请日：2011-11-01

申请人： Dmitry Budker ,  Micah Ledbetter ,  Todor Karaulanov ,  Mikhail V. Balabas

发明人： Dmitry Budker ,  Micah Ledbetter ,  Todor Karaulanov ,  Mikhail V. Balabas

IPC分类号： G01R33/00

CPC分类号： G01R33/1284 ,  G01R33/26 ,  G01R33/282

摘要： An atomic vapor cell apparatus and method for obtaining spin polarized vapor of alkali atoms with relaxation times in excess of one minute is provided. The interior wall of the vapor cell is coated with an alkene-based material. The preferred coatings are alkenes ranging from C18 to C30 and C20-C24 are particularly preferred. These alkene coating materials, can support approximately 1,000,000 alkali-wall collisions before depolarizing an alkali atom, an improvement by roughly a factor of 100 over traditional alkane-based coatings. Further, the method involves a combination of one or more of the following: the use of a locking device to isolate the atoms in the volume of the vapor cell from the sidearm used as a reservoir for the alkali metal vapor source, careful management of magnetic-field gradients, and the use of the spin-exchange-relaxation-free (SERF) technique for suppressing spin-exchange relaxation.

摘要翻译： 提供了一种用于获得超过一分钟的弛豫时间的碱性原子的旋转极化蒸气的原子蒸汽池装置和方法。 蒸气室的内壁涂覆有基于烯烃的材料。 优选的涂层是从C18到C30的烯烃，特别优选的是C20-C24。 这些烯烃涂层材料可以在碱性原子去极化之前支持大约100万个碱壁碰撞，比传统的烷烃基涂料改善约100倍。 此外，该方法涉及以下一个或多个的组合：使用锁定装置将蒸气室的体积中的原子与用作碱金属蒸气源的储存器的侧臂隔离，仔细管理磁性 - 场梯度，以及使用自旋交换松弛（SERF）技术来抑制自旋交换弛豫。

公开(公告)号：US08570035B2

公开(公告)日：2013-10-29

申请号：US12747488

申请日：2008-12-12

申请人： David Wemmer ,  Alexander Pines ,  Louis Bouchard ,  Shoujun Xu ,  Elad Harel ,  Dmitry Budker ,  Thomas Lowery ,  Micah Ledbetter

发明人： David Wemmer ,  Alexander Pines ,  Louis Bouchard ,  Shoujun Xu ,  Elad Harel ,  Dmitry Budker ,  Thomas Lowery ,  Micah Ledbetter

IPC分类号： G01V3/00

CPC分类号： G01R33/0322

摘要： A novel approach to magnetic resonance imaging is disclosed. Blood flowing through a living system is prepolarized, and then encoded. The polarization can be achieved using permanent or superconducting magnets. The polarization may be carried out upstream of the region to be encoded or at the place of encoding. In the case of an MRI of a brain, polarization of flowing blood can be effected by placing a magnet over a section of the body such as the heart upstream of the head. Alternatively, polarization and encoding can be effected at the same location. Detection occurs at a remote location, using a separate detection device such as an optical atomic magnetometer, or an inductive Faraday coil. The detector may be placed on the surface of the skin next to a blood vessel such as a jugular vein carrying blood away from the encoded region.

摘要翻译： 公开了一种新的磁共振成像方法。 流过生命系统的血液是预极化的，然后被编码。 可以使用永磁体或超导磁体实现极化。 极化可以在要编码的区域的上游或在编码的地方进行。 在脑的MRI的情况下，流动的血液的极化可以通过将磁体放置在身体的一部分上，例如头部上游的心脏。 或者，极化和编码可以在相同的位置进行。 使用诸如光学原子磁强计之类的单独检测装置或感应式法拉第线圈在远程位置进行检测。 检测器可以放置在皮肤表面上，紧靠血管如颈静脉，血液远离编码区域。

公开(公告)号：US20110001478A1

公开(公告)日：2011-01-06

申请号：US12747488

申请日：2008-12-12

申请人： David Wemmer ,  Alex Pines ,  Louis Bouchard ,  Shoujun Xu ,  Elad Harel ,  Dmitry Budker ,  Thomas Lowery ,  Micah Ledbetter

发明人： David Wemmer ,  Alex Pines ,  Louis Bouchard ,  Shoujun Xu ,  Elad Harel ,  Dmitry Budker ,  Thomas Lowery ,  Micah Ledbetter

IPC分类号： G01R33/48

CPC分类号： G01R33/0322

摘要： A novel approach to magnetic resonance imaging is disclosed. Blood flowing through a living system is prepolarized, and then encoded. The polarization can be achieved using permanent or superconducting magnets. The polarization may be carried out upstream of the region to be encoded or at the place of encoding. In the case of an MRI of a brain, polarization of flowing blood can be effected by placing a magnet over a section of the body such as the heart upstream of the head. Alternatively, polarization and encoding can be effected at the same location. Detection occurs at a remote location, using a separate detection device such as an optical atomic magnetometer, or an inductive Faraday coil. The detector may be placed on the surface of the skin next to a blood vessel such as a jugular vein carrying blood away from the encoded region.

摘要翻译： 公开了一种新的磁共振成像方法。 流过生命系统的血液是预极化的，然后被编码。 可以使用永磁体或超导磁体实现极化。 极化可以在要编码的区域的上游或在编码的地方进行。 在脑的MRI的情况下，流动的血液的极化可以通过将磁体放置在身体的一部分上，例如头部上游的心脏。 或者，极化和编码可以在相同的位置进行。 使用诸如光学原子磁强计之类的单独检测装置或感应式法拉第线圈在远程位置进行检测。 检测器可以放置在皮肤表面上，紧靠血管如颈静脉，血液远离编码区域。

公开(公告)号：US08725493B2

公开(公告)日：2014-05-13

申请号：US12101904

申请日：2008-04-11

申请人： Lukas K. Womack ,  Thomas A. Visel ,  Matthew Fettig ,  Hannah Lindsley ,  Micah Ledbetter

发明人： Lukas K. Womack ,  Thomas A. Visel ,  Matthew Fettig ,  Hannah Lindsley ,  Micah Ledbetter

IPC分类号： G06F17/27

CPC分类号： G06F17/2705 ,  G06F17/271 ,  G06F17/2785 ,  G06F17/28

摘要： A method for parsing the flow of natural human language to convert a flow of machine recognizable language into a conceptual flow includes, first, recognizing the lexical structure and then, a basic semantic grouping is determined for the language flow in the lexical structure. The basic semantic grouping is then determined that denotes the main action, occurrence or state of being for the language flow. The responsibility of the main action, occurrence or state of being for the language flow is then determined within the lexical structure followed by semantically parsing the lexical structure. Thereafter, any ambiguities in the responsibilities are resolved in a recursive manner by applying a predetermined set of rules thereto.

摘要翻译： 用于解析自然人类语言的流程以将机器可识别语言流转换成概念流的方法包括首先识别词汇结构，然后为词汇结构中的语言流确定基本语义分组。 然后确定基本语义分组，其表示语言流的主要动作，出现或状态。 然后在词汇结构中确定主要动作，语言流程的发生或状态的责任，然后在语义上解析词汇结构。 此后，通过对其规定的一组规则来递归地解决责任中的任何歧义。