Ambrogio, S., Walker, A., Narracott, A. orcid.org/0000-0002-3068-6192 et al. (3 more authors) (2019) A complex flow phantom for medical imaging : ring vortex phantom design and technical specification. Journal of Medical Engineering & Technology, 43 (3). pp. 190-201. ISSN 0309-1902
Abstract
Cardiovascular fluid dynamics exhibit complex flow patterns, such as recirculation and vortices. Quantitative analysis of these complexities supports diagnosis, leading to early prediction of pathologies. Quality assurance of technologies that image such flows is challenging but essential, and to this end, a novel, cost-effective, portable, complex flow phantom is proposed and the design specifications are provided. The vortex ring is the flow of choice because it offers patterns comparable to physiological flows and is stable, predictable, reproducible and controllable. This design employs a piston/cylinder system for vortex ring generation, coupled to an imaging tank full of fluid, for vortex propagation. The phantom is motor-driven and by varying piston speed, piston displacement and orifice size, vortex rings with different characteristics can be produced. Two measurement methods, namely Laser-PIV and an optical/video technique, were used to test the phantom under a combination of configurations. Vortex rings with a range of travelling velocities (approximately 1–80 cm/s) and different output-orifice diameters (10–25 mm) were produced with reproducibility typically better than ±10%. Although ultrasound compatibility has been demonstrated, longer-term ambitions include adapting the design to support comparative studies with different modalities, such as MRA and X-ray-CTA.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2019 Informa UK Limited, trading as Taylor & Francis Group. This is an author-produced version of a paper subsequently published in Journal of Medical Engineering and Technology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Medical Imaging Phantom; Doppler Ultrasound Quality Assurance; Vortex Ring; Complex Flow Phantom; Laser PIV |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > The Medical School (Sheffield) > Department of Infection & Immunity |
Funding Information: | Funder Grant number European Commission - Horizon 2020 VPH CaSE 642612 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Aug 2019 10:53 |
Last Modified: | 15 Jul 2020 00:38 |
Status: | Published |
Publisher: | Taylor & Francis |
Refereed: | Yes |
Identification Number: | 10.1080/03091902.2019.1640309 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149487 |