Position tracking and imaging system for use in medical applications
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United States of America Patent
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Aug 23, 2005
Issued Date -
N/A
app pub date -
Sep 3, 2002
filing date -
Sep 15, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of monitoring a position of a medical instrument with respect to a patient's body, including positioning a patient reference unit on a portion of the patient's body; positioning a remote unit with respect to the medical instrument; associating at least one field sensor with at least one of the patient reference unit and the remote unit; generating an electromagnetic position characteristic field; producing position data responsive to a sensor output signal that is responsive to the presence of the electromagnetic position characteristic field such that the sensor output signal is representative of a position of the remote unit with respect to the patient reference unit; determining image data representing a plurality of images of the patient's body; and displaying an image of the patient's body based on the image data and responsive to position image data that varies for different position data.
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