Transverse oscillation vector flow imaging for transthoracic echocardiography
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Transverse oscillation vector flow imaging for transthoracic echocardiography. / Bradway, David P.; Hansen, Kristoffer L.; Nielsen, Michael B.; Jensen, Jørgen A.
Medical Imaging 2015: Ultrasonic Imaging and Tomography. ed. / Neb Duric; Johan G. Bosch. SPIE, 2015. 941902 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol. 9419).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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TY - GEN
T1 - Transverse oscillation vector flow imaging for transthoracic echocardiography
AU - Bradway, David P.
AU - Hansen, Kristoffer L.
AU - Nielsen, Michael B.
AU - Jensen, Jørgen A.
N1 - Publisher Copyright: © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. © 2015 SPIE.
PY - 2015
Y1 - 2015
N2 - This work presents the development and first results of in vivo transthoracic cardiac imaging using an implementation of Vector Flow Imaging (VFI) via the Transverse Oscillation (TO) method on a phased-array transducer. Optimal selection of the lateral wavelength of the transversely-oscillating receive field is described, and results from Field II simulations are presented. Measurements are made using the SARUS experimental ultrasound scanner driving an intercostal phased-array probe. The acquisition sequence was composed of interleaved frames of 68-line B-mode and 17-direction, 32-shot vector velocity flow images. A flow pump was programmed for constant flow for in vitro acquisitions at varying depths in a tissue-mimicking fluid. Additionally, mitral, aortic, and tricuspid valves of two healthy volunteers were scanned from intercostal acoustic windows. The acquired RF data were beam-formed via the TO method, and fourth-order estimators were employed for the velocity estimation. The resulting images were compared with those from conventional spectral Doppler and color flow mapping sequences. VFI is shown to be a clinically-feasible tool, which enables new flexibility for choosing acoustic windows, visualizing turbulent flow patterns, and measuring velocities.
AB - This work presents the development and first results of in vivo transthoracic cardiac imaging using an implementation of Vector Flow Imaging (VFI) via the Transverse Oscillation (TO) method on a phased-array transducer. Optimal selection of the lateral wavelength of the transversely-oscillating receive field is described, and results from Field II simulations are presented. Measurements are made using the SARUS experimental ultrasound scanner driving an intercostal phased-array probe. The acquisition sequence was composed of interleaved frames of 68-line B-mode and 17-direction, 32-shot vector velocity flow images. A flow pump was programmed for constant flow for in vitro acquisitions at varying depths in a tissue-mimicking fluid. Additionally, mitral, aortic, and tricuspid valves of two healthy volunteers were scanned from intercostal acoustic windows. The acquired RF data were beam-formed via the TO method, and fourth-order estimators were employed for the velocity estimation. The resulting images were compared with those from conventional spectral Doppler and color flow mapping sequences. VFI is shown to be a clinically-feasible tool, which enables new flexibility for choosing acoustic windows, visualizing turbulent flow patterns, and measuring velocities.
KW - Blood Flow
KW - Cardiac Imaging
KW - Medical Ultrasound
KW - Transverse Oscillation
KW - Vector Flow Imaging
UR - http://www.scopus.com/inward/record.url?scp=84943517123&partnerID=8YFLogxK
U2 - 10.1117/12.2081145
DO - 10.1117/12.2081145
M3 - Article in proceedings
AN - SCOPUS:84943517123
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Medical Imaging 2015
A2 - Duric, Neb
A2 - Bosch, Johan G.
PB - SPIE
T2 - Medical Imaging 2015: Ultrasonic Imaging and Tomography
Y2 - 22 February 2015 through 23 February 2015
ER -
ID: 331500574