Device for the physical location of a moveable body part

摘要

The device has a sound source (SQ) arranged outside a patient to emit a sound wave (SW) to propagate upto the movement volume (BV). A sound receiver device i.e. microphone (M1), detects another sound wave having a defined excitation wavelength or frequency and generated when the former sound wave causes a spectral exciter (ER) having a predetermined position relative to a part e.g. tumor (TU) of the pateint's body (KO) to oscillate. The sound receiver device is positioned such that the latter sound wave encounters a maximum number of sound receiver inputs. An independent claim is also included for a method of determining three-dimensional coordinates of a body part of a living being in real time.