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Proceedings Paper

Acoustical phase conjugation and optical quasi-phase conjugate mirror in medical fields
Author(s): Daniele Fargion
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Paper Abstract

The coherent detection (and the consequent replay forward or backward in time emission) by an array of microphones (and loud speakers), in mutual phase, may mimic a dynamical acoustic hologram or a dynamical acoustic phase conjugate mirror (APCM). The ability of APCM to compensate distortions due to diffusing subjects (as part of living bodies) may in principle reverse in 3D detail (and with no hazard) the internal structure of anatomic components (tissue...) as well as absorbing ones (bones...). The resolution and the applications of APCM in medical inspections are discussed: megahertz frequencies are preferred. Anatomic subjects are generally optically opaque, but they are acoustically transparent. This is the reason to prefer APCM to optical PCM in medical as well as in geological inspections.

Paper Details

Date Published: 3 September 1993
PDF: 15 pages
Proc. SPIE 1889, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine III, (3 September 1993); doi: 10.1117/12.155708
Show Author Affiliations
Daniele Fargion, Rome Univ. I `La Sapienza' (Italy)

Published in SPIE Proceedings Vol. 1889:
Holography, Interferometry, and Optical Pattern Recognition in Biomedicine III
Halina Podbielska, Editor(s)

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