NDLI: P3G-7 Adaptive Field-of-View Imaging for Efficient Phase Rotation Beamforming

Content Provider	IEEE Xplore Digital Library
Author	Agarwal, A. Schneider, F.K. Yang Mo Yoo Yongmin Kim
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng. & Bioeng., Washington Univ., Seattle, WA (Agarwal, A.; Schneider, F.K.; Yang Mo Yoo; Yongmin Kim)
Abstract	Digital quadrature demodulation (QD)-based phase rotation beamforming (PRBF) is commonly used in ultrasound machines due to its low sensitivity to phase delay errors. However, it is very expensive computationally. To alleviate this high computational requirement during the QD, we have previously developed two efficient methods, two-stage demodulation (TSD) and multi-stage uniform coefficient (MSUC) filter. In this paper, we present an adaptive field-of-view (FOV) imaging method, which dynamically varies the beamforming frequency based on the FOV of display. When the number of channels is 32 and the number of beamforming points is 512, the proposed method lowers the complexity of the MSUC- and the TSD-based PRBF by 26.2% and 65.3%, respectively, in terms of the number of operations. The image quality with adaptive FOV imaging has been evaluated using simulation and in vivo data. Adaptive FOV imaging with the MSUC-based PRBF provides comparable contrast resolution (CR) to the QD-based PRBF for various FOV sizes (e.g., CR degradation of 0.4% and 0.01% was obtained for the FOV size of 160 mm and 85 mm, respectively). Adaptive FOV imaging with the TSD-based PRBF suffers from some degradation in image quality for the large FOV (i.e., 4.3% degradation in CR). On the other hand, it provides comparable image quality for the smaller FOV (i.e., 0.5% degradation in CR). These preliminary results indicate that the adaptive FOV imaging method has good potential to further reduce the hardware complexity of the PRBF based on MSUC and TSD
Starting Page	2144
Ending Page	2147
File Size	1275452
Page Count	4
File Format	PDF
ISBN	1424402018
ISSN	10510117
DOI	10.1109/ULTSYM.2006.540
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Chromium Degradation Image quality Ultrasonic imaging Demodulation Delay Filters Frequency Displays
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in