Experimental investigation of 3-D blood flow velocity measurement

Naotaka Nitta, Kazuhiro Hagihara, Tsuyoshi Shiina

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Ultrasonic pulse Doppler tomography is generally applied to noninvasive vascular measurement. The present method, however, measures only one component along the beam direction of a three-dimensional (3-D) velocity vector and provides useful information only if the beam direction in relation to the flow velocity vector is known. Images obtained by such systems are not only unsuitable for quantitative evaluation and but also prone to misinterpretation. On the other hand, in terms of real-time data acquisition achieved by scanning 3-D space, a two-dimensional (2-D) array probe is expected to become indispensable for future clinical applications. From this point of view, we have proposed a method of measuring a 3-D velocity vector using the 2-D array probe. In this paper, the principles of the proposed approach are introduced and experimental data obtained using a prototype system and the flow phantom are processed. Experimental results validate the usefulness of the method and its potential for practical use.

Original languageEnglish
Pages (from-to)3126-3130
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume35
Issue number5 B
DOIs
Publication statusPublished - 1996
Externally publishedYes

Keywords

  • 2-D array probe
  • 3-D measurement
  • Blood flow
  • Pulse doppler tomography
  • Velocity vector

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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