FDTD simulation of transcranial focusing using ultrasonic phase-conjugate arrays

Conference item

Focusing ultrasonic fields onto selected targets within the body with good accuracy and sufficient intensity to allow controlled necrosis of a region of tissue is a topic of great interest in medical acoustics. Several techniques have been demonstrated through simulation and laboratory experiment to achieve promising results [1, 2, 3]. The purpose of the present paper is to demonstrate the use of acoustic phase conjugation, or more narrowly in this context, time reversal as a valid focusing technique in biological tissue, which does not require a priori knowledge of the inhomogeneous propagation medium’s properties. Another goal of this paper is to demonstrate the effectiveness of the finite-difference time-domain (FDTD) method for the simulation of linear acoustic propagation in an inhomogeneous propagation medium.

Authors: Hallaj, I; Cleveland, R; Kargl, S; Roy, R

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Host title: Acoustical Imaging
• Journal: Acoustical Imaging
• Volume: 23
• Pages: 61-66
• Publication date: 1998-01-31
• Acceptance date: 1997-04-13
• DOI: 10.1007/978-1-4419-8588-0_10
• ISBN: 9780306457685
• Keywords: SBTMR