Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) A laparoscopic ultrasound probe with attached field detector. A sterile rubber sheath is placed over the probe in this design. (b) Microwave antenna with embedded sensor. (c) A magnetic field generator pad is placed beneath the patient on the operating table. Sensor coils, attached to instruments, induce electrical currents as they move through the magnetic field. These inducted currents are recorded and instrument position in three-dimensional space is calculated
