title: New techniques in mechanocardiography.
abstract: Many new approaches towards noninvasive cardiology have been introduced into clinical practice recently and "old" methods such as apexcardiography reevaluated. Problems concerning calibration of some of these systems will be discussed briefly. Advances have been made recently in the field of optical methods: chest wall displacement can be obtained using light sources (Moiré interferograms and laser displacement). Combination of different methods: echo-, phono- and mechanocardiography, have led to completely new insights in the genesis of low frequency and high frequency vibrations of the heart. Digital signal processing methods have been developed for the analysis of combined echo-phono-mechanocardiograms. In this way left ventricular function can be determined in a very effective way.
mesh_terms: D003201:Computers; D004452:Echocardiography / Q000379:methods; D006334:Heart Function Tests / Q000379:methods*; D006801:Humans; D007702:Kinetocardiography / Q000379:methods; D055095:Optics and Photonics; D010701:Phonocardiography / Q000379:methods