Ultrasonic nondiffracting beam image formation and restoration
- 9 December 2002
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1305-1308
- https://doi.org/10.1109/ultsym.1991.234053
Abstract
A Model for B-mode image formation with a nondiffracting beam (NDB) transducer is presented. This model characterizes the system in terms of its line spread function (LSF). The authors also investigate higher-resolution improvement by employing a restoration process. The analysis of image formation model reveals that the LSF can be decomposed in two 1-D terms. The LSF is generally position-variant, however, under some reasonable conditions, it may be approximated by a position-invariant function. Based on the approximate form, the authors have designed two 1-D restoration filters. Use of two 1-D restoration filters instead of one 2-D filter saves processing time and memory. Results based on simulated B-mode images are presented Author(s) Fatemi, M. Iran. Research Org., Tehran, Iran Arad, M.A.Keywords
This publication has 5 references indexed in Scilit:
- Pulse-echo imaging using a nondiffracting beam transducerUltrasound in Medicine & Biology, 1991
- Pulse distortion in nondiffracting beam pulse echo systems.The Journal of the Acoustical Society of America, 1991
- Generation of a nondiffracting beam with frequency- independent beamwidthThe Journal of the Acoustical Society of America, 1990
- Exact solutions for nondiffracting beams I The scalar theoryJournal of the Optical Society of America A, 1987
- Ultrasonic B-Scan Imaging: Theory of Image Formation and a Technique for RestorationUltrasonic Imaging, 1980