发明名称 |
SYSTEM AND METHOD FOR CORRECTION OF INHOMOGENEOUS FIELDS |
摘要 |
A method for determining a location of an object in a three-dimensional localization field created by a localization system includes the following steps: providing a catheter having known spacing between electrodes; providing a lookup table of data correlating locations of an object within the localization field with measurements made by the localization system; placing the catheter into the localization field; using the localization system to determine the location of the electrodes based on the lookup table; calculating an observed distance between electrodes; comparing the observed distance to the known electrode spacing; and adjusting the lookup table to more accurately measure the spacing of the electrodes. A Kernel function, such as the derivative of a Gaussian function, may be used to update the lookup table. |
申请公布号 |
EP2120700(A1) |
申请公布日期 |
2009.11.25 |
申请号 |
EP20070870126 |
申请日期 |
2007.12.31 |
申请人 |
ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC. |
发明人 |
OLSON, ERIC S. |
分类号 |
A61B5/05 |
主分类号 |
A61B5/05 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|