Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/42579
Title: Ultrasound signal processing and imaging
Authors: Phyoe, Kyaw Kyaw.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
Issue Date: 2011
Abstract: Reverberation and multi-path reflection artifacts are common problems in ultrasound imaging. In this study, the low image quality problem of medical ultrasound imaging in the term of reverberation artifact is addressed, and subsequently a model based on which the reduction technique of reverberation artifacts is proposed. Reverberation caused by reflections of ultrasound signal between two interfaces gives rise to multiple copies of the anatomy at the interface, significantly degrading image quality and accuracy. This study is an extension of the method for the identification of reverberation echoes in multilayered media, based on the comparison of their power spectra (estimated via Fast Fourier Transform) through a least mean square approach, and linear combination of the temporal relationship (based on time-of-flight). To provide a systematic approach, the author investigated the nature of reverberation artifacts formation, and proposed a mathematical model to express reverberations concisely and accurately.
URI: http://hdl.handle.net/10356/42579
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
eP4008-091.pdf
  Restricted Access
2.88 MBAdobe PDFView/Open

Page view(s) 20

274
Updated on Feb 25, 2021

Download(s) 20

12
Updated on Feb 25, 2021

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.