NDLI: Experimental study on the truncated long code sequence for ultrasound Doppler detection

Content Provider	IEEE Xplore Digital Library
Author	Zhengdi Qin Deqing Liu Siping Chen
Copyright Year	2012
Description	Author affiliation: Dept. of Biomed. Eng., Shenzhen Univ., Shenzhen, China (Zhengdi Qin; Deqing Liu; Siping Chen)
Abstract	When applying the coded transmission technique into the pulsed-echo ultrasound system one of the big problems is the limited time frame for the coding sequence to be feed into the pulse-echo duration. Generally, only very short code sequence could be modulated in each transmitted pulse especially in the medical ultrasound system. Due to the poor correlation property of such kind of short code and the nonlinear field attenuation in the ultrasound propagation, the coding result is far from satisfaction. We have presented a truncated long code scheme for the ultrasound Doppler detection [1] [2]. The time duration to be considered for the selection of the length of the code sequence is extended to be as long as the spectrum estimation window allows. Long code sequence modulation can be applied in the pulse-echo system. The long code is first truncated into many short segments and each segment is used for each pulse modulation. Then, the returned signals from the multiple segments are coherently combined for the Doppler detection. The coding effect with a long code gives a good appearance in the process with its good correlation property, which gives solid backup for the field compensation. Some water tank experiments are shown in this paper.
Starting Page	50
Ending Page	52
File Size	347946
Page Count	3
File Format	PDF
ISBN	9781467311830
e-ISBN	9781467311847
DOI	10.1109/BMEI.2012.6513018
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	coded ultrasound Ultrasound Doppler pulse-echo spread spectrum
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
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