New applications of magneto-acoustic phase conjugation
Résumé
The results of theoretical and experimental studies of application of parametric wave phase conjugation (WPC) for ultrasonic velocimetry of flows are reported. 3D-simulation of propagation of phase conjugate waves (PCW) in nonlinear and moving media is developed. Break of time reversal invariance of WPC in moving media is considered as a principle of detection and velocimetry of flows. The results of experimental harmonic imaging of flows in water are presented in comparison with theoretical description. Application of WPC technique for diagnostics of blood circulation is demonstrated on an example of pulsating flow in a real blood vessel “in vitro”.
Domaines
Mécanique [physics.med-ph]Origine | Fichiers produits par l'(les) auteur(s) |
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