公开(公告)号：US5377678A

公开(公告)日：1995-01-03

申请号：US91419

申请日：1993-07-14

申请人： Charles L. Dumoulin ,  Robert D. Darrow ,  John F. Schenck ,  Peter B. Roemer

发明人： Charles L. Dumoulin ,  Robert D. Darrow ,  John F. Schenck ,  Peter B. Roemer

IPC分类号： A61B5/06 ,  A61B6/12 ,  A61B10/00 ,  A61B10/02 ,  A61B17/34 ,  A61B19/00 ,  A61M25/01 ,  A61B5/00 ,  A61B6/00

CPC分类号： A61B10/0233 ,  A61B34/20 ,  A61B5/06 ,  A61B6/12 ,  A61B17/3403 ,  A61B2034/2051 ,  A61B2090/365 ,  A61B2090/3958

摘要： A tracking system in which radiofrequency signals emitted by an invasive device such as a catheter, are detected and used to measure the position and orientation of the invasive device. The invasive device has a transmit coil attached near its end and is driven by a low power RF source to produce a dipole electromagnetic field that can be detected by an array of receive coils distributed around a region of interest. The position and orientation of the device as determined by the tracking system are superimposed upon independently acquired Medical Diagnostic images, thereby minimizing the radiographic exposure times. One or more invasive devices can be simultaneously tracked.

摘要翻译： 检测由诸如导管的侵入性装置发射的射频信号并用于测量侵入性装置的位置和取向的跟踪系统。 侵入性装置具有靠近其端部附接的发射线圈并且由低功率RF源驱动以产生可以通过分布在感兴趣区域周围的接收线圈阵列来检测的偶极电磁场。 由跟踪系统确定的装置的位置和方向被叠加在独立获取的医学诊断图像上，从而使放射照相曝光时间最小化。 可以同时跟踪一个或多个入侵设备。

公开(公告)号：US5211165A

公开(公告)日：1993-05-18

申请号：US753565

申请日：1991-09-03

申请人： Charles L. Dumoulin ,  Robert D. Darrow ,  John F. Schenck ,  Steven P. Souza

发明人： Charles L. Dumoulin ,  Robert D. Darrow ,  John F. Schenck ,  Steven P. Souza

IPC分类号： A61B5/06 ,  A61B6/12 ,  G01V3/10

CPC分类号： A61B5/06 ,  A61B6/12 ,  G01V3/104 ,  A61B2034/2051

摘要： A tracking system in which radiofrequency signals emitted by an invasive device such as a catheter are detected and used to measure the position and orientation of the invasive device within a subject. Detection of the radiofrequency signals is accomplished with coils having sensitivity profiles which vary approximately linearly with position. The invasive device has a transmit coil attached near its end and is driven by a low power RF source to produce a dipole electromagnetic field that can be detected by an array of receive coils distributed around a region of interest of the subject. The position and orientation of the device as determined by the tracking system are superimposed upon independently acquired Medical Diagnostic images, thereby minimizing the diagnostic exposure times. One or more invasive devices can be simultaneously tracked.

摘要翻译： 检测由诸如导管的侵入性装置发射的射频信号并用于测量受试者内的侵入性装置的位置和取向的跟踪系统。 射频信号的检测是用具有随位置近似线性变化的灵敏度分布的线圈来实现的。 侵入性装置具有靠近其端部附接的发射线圈，并且由低功率RF源驱动以产生可以通过分布在受试者的感兴趣区域周围的接收线圈阵列来检测的偶极电磁场。 由跟踪系统确定的设备的位置和方向叠加在独立获取的医学诊断图像上，从而最小化诊断曝光时间。 可以同时跟踪一个或多个入侵设备。

公开(公告)号：US5201312A

公开(公告)日：1993-04-13

申请号：US939381

申请日：1992-08-19

申请人： John F. Schenck ,  Steven P. Souza ,  David R. Eisner

发明人： John F. Schenck ,  Steven P. Souza ,  David R. Eisner

IPC分类号： A61B3/125 ,  A61B5/055 ,  G01R33/341

CPC分类号： A61B3/125 ,  A61B5/055 ,  G01R33/341 ,  Y10S977/93

摘要： An antenna for NMR imaging of the eye of a patient includes a small circular or oval surface coil which is locatable immediately adjacent to the eye of the patient and supported by a member having a shape contoured to fit in the region between the zygomatic and supra-orbital arches of the face. The supporting member may be a disc supporting a whole-eye surface coil anterior of the eye, or may be a contact-lens-like member supporting a fine wire surface coil substantially in contact with the anterior orbital aspect.

摘要翻译： 用于患者眼睛的NMR成像的天线包括小的圆形或椭圆形表面线圈，该圆形或椭圆形表面线圈可紧邻患者的眼睛定位，并由具有成形形状的构件支撑，以适合于z骨和上眼睛之间的区域， 轨道拱门的脸。 支撑构件可以是支撑眼睛前方的全眼表面线圈的盘，或者可以是支撑基本上与前轨道方面接触的细线表面线圈的接触透镜状构件。