Design of Anthropomorphic Flow Phantoms Based on Rapid Prototyping of Compliant Vessel Geometries

Lai, Simon S.M.; Yiu, Billy Y. S.; Poon, Alexander Kai Kei; Yu, Alfred C. H.

doi:10.1016/j.ultrasmedbio.2013.03.015

Cited by 57 publications

(42 citation statements)

References 39 publications

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“…Pulsating flow was also scanned using an in-house fabricated flow phantom comprised of a straight tube with a concentric constriction of 36 %. The tube was surrounded by a tissue-mimicking material consisting of 15 % polyvinyl alcohol cryogel, 1 % silicon dioxide, 0.3 % potassium sorbate, and 83.7 % distilled water [12]. A blood-mimicking fluid was circulated through the tube in a closed loop circuit, and flow was generated by a CompuFlow 1000 system (Shelley Automation, Toronto, Canada).…”

Section: Methodsmentioning

confidence: 99%

High frame rate vector velocity estimation using plane waves and transverse oscillation

Jensen

Stuart

2015

2015 IEEE International Ultrasonics Symposium (IUS)

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Abstract-This paper presents a method for estimating 2-D vector velocities using plane waves and transverse oscillation. The approach uses emission of a low number of steered plane waves, which result in a high frame rate and continuous acquisition of data for the whole image. A transverse oscillating field is obtained by filtering the beamformed RF images in the Fourier domain using a Gaussian filter centered at a desired oscillation frequency. Performance of the method is quantified through measurements with the experimental scanner SARUS and the BK 2L8 linear array transducer. Constant parabolic flow in a flow rig phantom is scanned at beam-to-flow angles of 90, 75, and 60 • . The relative bias is between -1.4 % and -5.8 % and the relative std. between 5 % and 8.2 % for the lateral velocity component at the measured beam-to-flow angles. The estimated flow angle is 73.4 • ± 3.6 • for the measurement at 75 • . Measurement of pulsatile flow through a constricted vessel demonstrate the application of the method in a realistic flow environment with large spatial and temporal flow gradients.

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Section: Methodsmentioning

confidence: 99%

High frame rate vector velocity estimation using plane waves and transverse oscillation

Jensen

Stuart

2015

2015 IEEE International Ultrasonics Symposium (IUS)

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“…There have been a tiny number of papers describing manufacture of flow phantoms using 3D printing [eg. 14,[26][27][28]. These studies involve a number of steps; 3D printing is just one step in a series of steps towards the final phantom.…”

Section: Overallmentioning

confidence: 99%

Fabrication of Two Flow Phantoms for Doppler Ultrasound Imaging

Zhou

Kenwright

Wang

et al. 2017

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…An anthropomorphic flow phantom matching the flow domain of the original scanned vessel was fabricated using stereolithography [8]. After 3-D printing of the vessel core, it was fixated in a container and cast in polyvinyl alcohol (PVC) cryogel to obtain a tissue-mimicking surrounding medium.…”

Section: Flow Phantom Fabrication and Scanmentioning

confidence: 99%

Accuracy and precision of plane wave vector flow imaging for laminar and complex flow in vivo

Jensen¹,

Traberg²,

Hoyos³

et al. 2017

2017 IEEE International Ultrasonics Symposium (IUS)

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Abstract-In this study, a comparison between velocity fields for a plane wave 2-D vector flow imaging (VFI) method and a computational fluid dynamics (CFD) simulation is made. VFI estimates are obtained from the scan of a flow phantom, which mimics the complex flow conditions in the carotid artery. Furthermore, the precision of the VFI method is investigated under laminar and complex flow conditions in vivo. The carotid bifurcation of a healthy volunteer was scanned using both fast plane wave ultrasound and magnetic resonance imaging (MRI). The acquired MRI geometry of the bifurcation was used for fabricating an anthropomorphic flow phantom, which was also ultrasound scanned. The same geometry was used in a CFD simulation to calculate the velocity field. Results showed that similar flow patterns and vortices were estimated using CFD and VFI in the phantom. Velocity magnitudes were estimated with a mean difference within 15 %, however, it was 23 % in the external branch. For the in vivo scan, the precision in terms of mean standard deviation (SD) of estimates aligned to the cardiac cycle was highest in the center of the common carotid artery (SD 4.7• for angles) and lowest in the external branch and close to the vessel wall (SD 15.0• for angles).

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Design of Anthropomorphic Flow Phantoms Based on Rapid Prototyping of Compliant Vessel Geometries

Cited by 57 publications

References 39 publications

High frame rate vector velocity estimation using plane waves and transverse oscillation

High frame rate vector velocity estimation using plane waves and transverse oscillation

Fabrication of Two Flow Phantoms for Doppler Ultrasound Imaging

Accuracy and precision of plane wave vector flow imaging for laminar and complex flow in vivo

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