title: [A preliminary study on the extraction method of velocity pulsated signals in the velocity spectrum image of pulsed Doppler ultrasounds in vitro].
abstract: Focus on the defects of the extraction method of velocity pulsated signals in the velocity spectrum image of pulsed Doppler ultrasounds (such as the limited data, great amount of work and low reproducibility), we combine the earlier research results and the basic rules of the velocity spectrum image, and employing the visual basics plateau, to design and develop a software to extract the velocity signals from the spectrum image automatically. Compare the mean velocity and RNS between the PIV and the PDU resulting from the method, the correlations are r = 0.93 and r = 0.78 respectively. The study reveals the software increase the amount of valid data, decrease the amount of work and increase reproducibility of the signals extraction. The method may be an effective way to analyse the velocity spectrum image of PDU in clinic.
authors.affiliation: Department of Cardiovascular Surgery, West China Hospital of Sichuan University, Chengdu 610041, China. guo-yp@vip.sina.com
authors.forename: Yingqiang
authors.initials: Y
authors.lastname: Guo
authors.forename: Hong
authors.initials: H
authors.lastname: Tang
authors.forename: Weilin
authors.initials: W
authors.lastname: Xu
authors.forename: Shanjun
authors.initials: S
authors.lastname: Liu
authors.forename: Jianmin
authors.initials: J
authors.lastname: Zhang
authors.forename: Yingkang
authors.initials: Y
authors.lastname: Shi
mesh_terms: D001158:Arteries / Q000000981:diagnostic imaging*; D001783:Blood Flow Velocity / Q000502:physiology*; D006801:Humans; D011673:Pulsatile Flow; D012815:Signal Processing, Computer-Assisted; D012984:Software; D018617:Ultrasonography, Doppler, Pulsed / Q000379:methods