Medical diagnosis, treatment and imaging systems

摘要: A locating system for determining the location and orientation of an invasive medical instrument, example a catheter (10) or endoscope, relative to reference frame, comprising: plurality field generators (18, 20, 22) which generate known, distinguishable fields, preferably continuous AC magnetic in response drive signals; sensors (30, 32, 34) situated instrument proximate distal end thereof sensor signals said fields; signal processor (26) has input corresponding produces three coordinates point on instrument.