Adaptive diagnostic ultrasonic imaging

Authors
Citation
Gc. Ng et Ge. Trahey, Adaptive diagnostic ultrasonic imaging, CR AC S IV, 2(8), 2001, pp. 1113-1130
Citations number
36
Categorie Soggetti
Physics
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE IV PHYSIQUE ASTROPHYSIQUE
ISSN journal
12962147 → ACNP
Volume
2
Issue
8
Year of publication
2001
Pages
1113 - 1130
Database
ISI
SICI code
1296-2147(200110)2:8<1113:ADUI>2.0.ZU;2-7
Abstract
Medical ultrasonic imaging systems assume a constant, fixed acoustic propag ation velocity in tissue. This assumption allows the focusing of ultrasonic pulses in a simple way with transducer arrays with electronic delay lines. However, soft tissue acoustic velocities actually range from 1350 m/s to 1 725 m/s, and the basic focusing procedure fails to obtain high quality imag es on some patients. Here we describe different adaptive techniques that al low focusing through such inhomogeneous tissues. (C) 2001 Academie des scie nces/Editions scientifiques et medicales Elsevier SAS.