Method for obtaining strain from radially-tagged magnetic resonance imaging (MRI)
    61.
    发明授权
    Method for obtaining strain from radially-tagged magnetic resonance imaging (MRI) 有权
    从径向标记的磁共振成像(MRI)获得应变的方法

    公开(公告)号:US08073523B2

    公开(公告)日:2011-12-06

    申请号:US11810806

    申请日:2007-06-06

    IPC分类号: A61B5/055

    CPC分类号: G01R33/56333

    摘要: The present invention relates to a system for obtaining strain corresponding to an object's deformation by radially-tagged magnetic resonance imaging (MRI). The system acquires at least a ring-shaped crown region of Fourier domain (k-space) data for at least two sequential images of a radially-tagged object at different phases of deformation of the radially-tagged object. A first image represents a primary state of the radially-tagged object and a second image represents a secondary state of the radially-tagged object. Additionally, the images include radial tag lines. The first and second images are reconstructed as a reconstructed primary-state image and a reconstructed secondary-state image. The images are reconstructed as weighted by circumferential density of the radial tag lines, such that they are “tag line density-weighted” reconstructed images. Circumferential strain of the radially-tagged object is determined by comparing the two images.

    摘要翻译: 本发明涉及通过径向标记的磁共振成像(MRI)获得对应于物体的变形的应变的系统。 该系统在径向标记物体的不同变形阶段获取至少两个具有径向标记物体的连续图像的傅立叶域(k-空间)数据的环形冠部区域。 第一图像表示径向标记对象的主状态,第二图像表示径向标记对象的次状态。 另外,图像包括径向标签线。 第一和第二图像被重建为重建的主状态图像和重建的次状态图像。 通过径向标签线的圆周密度来重建图像,使得它们是“标签线密度加权”重建图像。 通过比较两个图像来确定径向标记物体的周向应变。

    APPARATUS AND METHODS FOR ROOT CANAL TREATMENTS
    64.
    发明申请
    APPARATUS AND METHODS FOR ROOT CANAL TREATMENTS 审中-公开
    根管治疗的装置和方法

    公开(公告)号:US20110111365A1

    公开(公告)日:2011-05-12

    申请号:US12940847

    申请日:2010-11-05

    IPC分类号: A61C5/02

    CPC分类号: A61C17/02 A61C5/40

    摘要: Apparatus and methods for root canal treatments are provided. In some embodiments, an aiming element may be used to position a high-velocity liquid jet near a desired location in the tooth. Embodiments of the aiming element may include an interrupter that deflects or impedes the liquid jet when it is not desirable for the jet to propagate from the aiming element. Embodiments of the aiming element may include an elongated member that permits passage of the liquid jet through a channel. The elongated member may include one or more openings, for example, on sides and/or ends of the member. Some root canal cleaning techniques include one or more applications of the liquid jet followed by application of a disinfectant such as, for example, an aqueous solution of sodium hypochlorite.

    摘要翻译: 提供了根管治疗的装置和方法。 在一些实施例中,瞄准元件可用于将高速液体射流定位在牙齿中所需位置附近。 瞄准元件的实施例可以包括当不期望射流从瞄准元件传播时偏转或阻止液体射流的中断器。 瞄准元件的实施例可以包括允许液体射流通过通道的细长构件。 细长构件可以包括例如在构件的侧面和/或端部上的一个或多个开口。 一些根管清洁技术包括液体射流的一个或多个应用,然后施加消毒剂,例如次氯酸钠水溶液。

    Root canal filling materials and methods
    66.
    发明授权
    Root canal filling materials and methods 有权
    根管灌装材料及方法

    公开(公告)号:US07833016B2

    公开(公告)日:2010-11-16

    申请号:US11752812

    申请日:2007-05-23

    IPC分类号: A61C5/02

    摘要: In various embodiments of a method for filling root canal spaces, the root canal spaces are cleaned and irrigated, for example, by any suitable endodontic procedure, and the irrigating liquid is not removed from the canal spaces prior to filling. In some embodiments, a hydrophobic filler material is introduced into the root canal spaces while they are filled with liquid. As the canal spaces are filled, the hydrophobic filler material displaces the liquid and drives it out of the canal spaces, towards the crown of the tooth, where it can be removed. The hydrophobic filler material may comprise magnetically responsive particles having a hydrophobic surface coating that are compacted into the root canal spaces by application of a magnetic force field. In other embodiments, hydrophilic filler material in a flowable phase is introduced into the canal spaces where it partly displaces and partly absorbs the irrigating liquid before solidifying.

    摘要翻译: 在用于填充根管空间的方法的各种实施例中,例如通过任何合适的牙髓手术来清洁和灌溉根管空间,并且冲洗液体在填充之前不从运河空间中移除。 在一些实施方案中,将疏水性填料材料引入根管空间,同时填充液体。 随着运河空间的填充,疏水性填充材料使液体移动,并将其从运河空间驱动,朝向牙齿的冠部移动,在那里可以将其移除。 疏水性填料可以包括具有通过施加磁力场而被压实成根管空间的疏水表面涂层的磁响应颗粒。 在其他实施方案中,可流动相中的亲水性填料材料被引入其中部分置换并在凝固之前部分地吸收冲洗液体的运河空间中。

    3-dimensional imaging by acoustic warping and defocusing
    67.
    发明授权
    3-dimensional imaging by acoustic warping and defocusing 有权
    通过声学翘曲和散焦三维成像

    公开(公告)号:US07715018B2

    公开(公告)日:2010-05-11

    申请号:US11784304

    申请日:2007-04-05

    IPC分类号: G01B11/24

    摘要: The present invention relates to a system for three-dimensional (3-D) acoustic imaging of a scattering structure using information from a two-dimensional (2-D) image. The system uses a characterized sensor array to emit a signal from the sensor array into an object of interest to generate at least one 2-D representation of the object of interest. The 2-D representation comprises a plurality of x and y coordinate pairs and at least one candidate scattering structure. The candidate scattering structure comprises a shape defined by at least one pair of x and y coordinates. The candidate scattering structure shape is restricted to at least one pair of x and y coordinates. The pair of x and y coordinates of the candidate scattering structure shape are then compared with a first coordinate-dependent response function to assign an x, y, and z position of a scattering structure in 3-D space.

    摘要翻译: 本发明涉及使用来自二维(2-D)图像的信息的散射结构的三维(3-D)声学成像系统。 该系统使用表征的传感器阵列将来自传感器阵列的信号发射到感兴趣的对象中,以产生感兴趣对象的至少一个2-D表示。 2-D表示包括多个x和y坐标对以及至少一个候选散射结构。 候选散射结构包括由至少一对x和y坐标定义的形状。 候选散射结构形状被限制为至少一对x和y坐标。 然后将候选散射结构形状的一对x和y坐标与第一坐标依赖响应函数进行比较,以在3-D空间中分配散射结构的x,y和z位置。

    Device and method for treating hydrocephalus
    68.
    发明授权
    Device and method for treating hydrocephalus 有权
    治疗脑积水的装置及方法

    公开(公告)号:US07524298B2

    公开(公告)日:2009-04-28

    申请号:US11137852

    申请日:2005-05-24

    IPC分类号: A61M1/36 F04B4/38

    CPC分类号: A61M5/14276 A61M27/006

    摘要: A shunt system for use in a human body that is formed from a length of tube that is configured as a pump. The length of tube may be configured as a hydroimpedance pomp, whose surfaces are pressed to pump fluid in the specified direction and way. The length of tube that forms the pump may be connected to shunt inlet and outlet parts, and may also include a valve that is adjustable to prevent back draining of fluid.

    摘要翻译: 一种用于人体的分流系统,其由构成为泵的管的长度形成。 管的长度可以被配置为一个抗阻抗性,其表面被按压以沿着指定的方向和方式泵送流体。 形成泵的管的长度可以连接到分流入口和出口部分,并且还可以包括可调节的阀,以防止流体反向排出。