A method for performing facial registration on rigid tissue for an ear/nose/throat procedure, comprising: loading a reference image (S) into a workstation; wherein a registration probe is in communication with the workstation; and displaying the reference image on a display in communication with the workstation; hovering the registration probe over a plurality of target locations (T) on a face of a patient; controlling, using a microcontroller, a transmitter to emit an ultrasonic wave from the registration probe at each of the target locations; receiving, via the registration probe, a return of the ultrasonic wave from each of the target locations; receiving, via the registration probe, a magnetic signal from a magnetic emitter located proximate to the face of the patient to identify a location in space of the registration probe relative to the magnetic emitter; and correlating each of the target locations of the received ultrasonic return to a location identified in space relative to the magnetic emitter; wherein correlating each of the target locations of the received ultrasonic return to a location identified in space relative to the magnetic emitter includes correlating each of the target locations on the reference image displayed; and wherein the reference image (S) is a computerized tomography, CT, scan of the face of the patient, and wherein the reference image (S) includes an image of nasal cavities of the patient and bone structure of the patient; and wherein the ultrasonic return is a wave reflected from a location on the bone structure of the patient and is received to determine a location of the registration probe with respect to the reference image, which location is compared to the location in space of the registration probe relative to the magnetic emitter to acquire a correlated target location. loading a reference image (S) into a workstation; wherein a registration probe is in communication with the workstation; and displaying the reference image on a display in communication with the workstation; hovering the registration probe over a plurality of target locations (T) on a face of a patient; controlling, using a microcontroller, a transmitter to emit an ultrasonic wave from the registration probe at each of the target locations; receiving, via the registration probe, a return of the ultrasonic wave from each of the target locations; receiving, via the registration probe, a magnetic signal from a magnetic emitter located proximate to the face of the patient to identify a location in space of the registration probe relative to the magnetic emitter; and correlating each of the target locations of the received ultrasonic return to a location identified in space relative to the magnetic emitter; wherein correlating each of the target locations of the received ultrasonic return to a location identified in space relative to the magnetic emitter includes correlating each of the target locations on the reference image displayed; and wherein the reference image (S) is a computerized tomography, CT, scan of the face of the patient, and wherein the reference image (S) includes an image of nasal cavities of the patient and bone structure of the patient; and wherein the ultrasonic return is a wave reflected from a location on the bone structure of the patient and is received to determine a location of the registration probe with respect to the reference image, which location is compared to the location in space of the registration probe relative to the magnetic emitter to acquire a correlated target location. <EOS>