| 摘要 |
A system for locating objects in space, such as medical instruments (16) within the body of a patient (P), based upon transmission of magnetic fields from coils (10) in a fixed frame of reference to sensors (20 , 22, 24) on the object or vice-versa. The current supplied to the coils is adjusted to assure that the sensors receive fields within a preselected range of magnitudes regardless of the location of the object in space. This assures that the sensor operates within its optimum range, an d permits use of compact transmitters and sensors.
|
