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IOP Publishing, Measurement Science and Technology, 11(24), p. 115701, 2013

DOI: 10.1088/0957-0233/24/11/115701

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Enhancing the dynamic range of Ultrasound Imaging Velocimetry using interleaved imaging:

Journal article published in 2013 by C. Poelma, Katharine H. Fraser ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

In recent years, non-invasive velocity field measurement based on correlation of ultrasound images has been introduced as a promising technique for fundamental research into disease processes, as well as a diagnostic tool. A major drawback of the method is the relatively limited dynamic range when conventional echography equipment is used. We present a method by which the restriction of the maximum flow rates can be relaxed. The method uses conventional hardware, but a novel read-out sequence that interleaves subsequent images. By varying the off-set between two interleaved images, we re-introduce the inter-frame time as a parameter that can be optimized for velocimetry. The novel approach is demonstrated with data from an in vitro study of a reference flow.