#$%^&*AU2016228319B220180510.pdf#####APPARATUS, SYSTEMS, AND METHODS FOR LOCALIZING MARKERS OR TISSUE STRUCTURES WITHIN A BODY Abstract There is disclosed herein a system (10) for localization of a target tissue region within a patient's body, comprising: a probe (30) comprising one or more antennas (32, 34) for transmitting microimpulse radar ("MIR") signals into a patient's body and receiving reflected signals from the patient's body, the probe (30) analyzing the reflected signals to identify one or more objects within the patient's body； and a marker (320) sized for implantation within a patient's body, the marker (320) comprising an electronic circuit configured to provide an active reflector antenna that modulates incident signals from the probe (30) striking the marker (320) such that reflected signals from the marker (320) enhance identification of the marker (320) by the probe (30).
