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Identification of vascular lumen by singular value decomposition filtering on blood flow velocity distribution

  • Ryo NagaokaEmail author
  • Hideyuki Hasegawa
Original Article
  • 26 Downloads

Abstract

Purpose

In the present study, we proposed a novel method for identification of the vascular lumen by employing singular value decomposition (SVD), and the feasibility of the proposed method was validated by in vivo measurement of the common carotid artery.

Method

SVD filtering was applied to a velocity map that was estimated using an autocorrelation method to identify the lumen region. In this study, the packet size was set at 999 frames with a frame rate of 1302 Hz. The region estimated by the proposed SVD filtering was compared with that estimated by the conventional power Doppler method.

Result

The averaged differences in feature values between vascular wall and lumen regions obtained by the proposed and conventional methods were 34 dB and 26 dB, respectively. The proposed method was hardly influenced by the cardiac phase and could separate the wall and lumen regions more stably. The proposed method could identify the lumen region by setting a threshold of − 28 dB from the averaged difference amplitude.

Conclusion

We proposed a novel method for identification of the vascular lumen. The proposed method could suppress the effects of wall motion, which was present in the conventional power Doppler image. The lumen region identified by the proposed method well conformed with the anatomical information in the B-mode image of the corresponding section.

Keywords

Lumen identification Singular value decomposition filtering Ultrasonic image High-frame-rate imaging 

Notes

Acknowledgements

This work was supported by JSPS Grant-in-Aids for Early-Career Scientists 18K18395 and Scientific Research (B) 17H03276.

Compliance with ethical standards

Ethical considerations

This study was approved by the institutional ethical committee and was performed with the informed consent of the subject.

Conflict of interest

The author(s) declare that they have no competing interests.

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Copyright information

© The Japan Society of Ultrasonics in Medicine 2019

Authors and Affiliations

  1. 1.Graduate School of Science and Engineering for ResearchUniversity of ToyamaToyamaJapan

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