NDLI: Entropy Based Phase Aberration Correction Technique in Ultrasound Imaging

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ahmed, M. Mahmoud Mukdadi, Osama Yasser, M. Kadah
Copyright Year	2007
Abstract	Ultrasound technology has been widely used in medical imaging. Techniques using phased array transducers use an array of transducer elements to transmit a focused beam into the body, and each element then becomes a receiver to collect the echoes. The received echoes from each element are dynamically focused to form an image. These systems assume a constant acoustic velocity in the tissue of 1540 m/s while steering and focusing the beam. However, soft tissues have a range of acoustic velocities that vary from 1470 m/s for fat to 1665 m/s for collagen [1]. The acoustic wavefront propagation through a region with locally different acoustic velocities will be phase shifted relative to the rest of the wavefront. This effect is known as phase aberration. The effects of phase aberration include broadening of the system point spread function that deteriorate the image resolution, and increasing the off-axis response leading to multiple images for the target [2].
Sponsorship	Bioengineering Division
Starting Page	539
Ending Page	540
Page Count	2
File Format	PDF
ISBN	0791847985
DOI	10.1115/SBC2007-175317
Conference Proceedings	ASME 2007 Summer Bioengineering Conference
Language	English
Publisher Date	2007-06-20
Publisher Place	Keystone, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Echoes Transducers Ultrasonic imaging Biological tissues Acoustics Entropy Resolution (optics) Ultrasound Biomedical imaging Soft tissues
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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