NDLI: New adaptive clutter rejection based on spectral decomposition and tissue acceleration for ultrasound color Doppler imaging

Content Provider	IEEE Xplore Digital Library
Author	Geunyong Park Youngtae Kim Hwan Shim Hyun-Woo Koh Hyungjoon Lim Jae Jin Lee Sunmi Yeo Tai-Kyong Song Yangmo Yoo
Copyright Year	2013
Description	Author affiliation: Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea (Geunyong Park; Jae Jin Lee; Sunmi Yeo; Tai-Kyong Song; Yangmo Yoo) \|\| Digital Media & Commun. R&D Center, Samsung Electron. Co., Ltd., Suwon, South Korea (Youngtae Kim; Hwan Shim; Hyun-Woo Koh; Hyungjoon Lim)
Abstract	In ultrasound color Doppler imaging(CDI), effective clutter rejection is essential for estimating flow velocity and power. Since the clutter has time-varying characteristics, it is challenging to suppress it with a static clutter filter. In this paper, a new adaptive clutter rejection method based on spectral decomposition and tissue acceleration (ACR) for suppressing nonstationary clutter is presented. In the proposed method, tissue and flow characteristics are analyzed from singular value decomposition of backscattered Doppler signals to select optimal clutter filter from a bank of clutter filters. To evaluate the ACR method, phantom and in vivo experiments were conducted. For the phantom experiments, 20 frames of complex baseband data were acquired with a commercial ultrasound system (V10, Samsung Medison, Seoul, Korea) using a 3.5-MHz convex array probe by tapping over the flow phantom (Gammex 1425A LE, Gammex, Middleton, WI, USA) surface to mimic tissue movements. Similarly, 20 frames of in vivo liver data from a volunteer were also acquired. The performance of the proposed ACR method was compared with conventional clutter rejection methods, i.e., static (ST) and down-mixing (DM), using a commonly-used flow signal-to-clutter ratio (SCR) and fractional residual clutter area (FRCA). From the phantom experiments, the ACR method provided 2.03 dB and 0.98 dB improvements in SCR over the ST and DM methods. Similarly, ACR showed improvements in fractional residual clutter area (FRCA) compared to the ST and DM methods (i.e., 2.3% vs. 5.4 % and 3.7%, respectively). The consistent results were obtained with the in vivo experiments. The improvement in SCR from the ACR method is 4.90 dB and 3.98 dB, compared to the ST and DM methods. In addition, the ACR method showed less than 1% FRCA values for all 20 frames of in vivo data. These results indicate that the proposed ACR based on spectral decomposition and tissue acceleration can improve image quality in ultrasound color Doppler imaging by effectively removing the clutter.
Sponsorship	IEEE Ultrason., Ferroelectr., Freq. Control Society
Starting Page	1484
Ending Page	1487
File Size	3942843
Page Count	4
File Format	PDF
ISSN	19485719
e-ISBN	9781467356862
DOI	10.1109/ULTSYM.2013.0376
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-21
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Clutter Doppler effect Ultrasonic imaging Image color analysis Cutoff frequency Imaging In vivo spectral analysis Ultrasound color Doppler imaging adaptive clutter rejection nonstationary clutter
Content Type	Text
Resource Type	Article

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