A medical location system includes a medical device having a body and a position
sensor at a portion of the body. The position sensor has a core made of a Wiegand
effect material and a winding circumferentially positioned around the core. The
position sensor provides signals that are used to determine temperature at the
position sensor and location information of the portion of the body of the medical
device. A signal processor is coupled to receive the signals from the position
sensor and the signal processor determines the temperature at the position sensor
and location information of the portion of the body of the medical device based
on the signals received from the position sensor.