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Title: High Frame Rate 3D Tissue Velocity Imaging Using Sub-Aperture Beamforming: a Pilot Study In Vivo
Authors: Santos, Pedro ×
Haugen, Geir
Løvstakken, Lasse
Samset, Eigil
D'hooge, Jan #
Issue Date: Sep-2016
Host Document: 2016 IEEE International Ultrasonics Symposium Proceedings pages:1-1
Conference: IEEE International Ultrasonics Symposium edition:2016 location:Tours date:18-21 Sep 2016
Abstract: Implementation of 3D high frame rate (HFR) tissue Doppler imaging (TDI) typically requires a fully wired matrix probe. However, such probes remain impractical for use in a clinical setting. Therefore, clinical matrix arrays rely on subaperture (SAP) beamforming. This makes diverging wave (DW) imaging challenging as side- and grating-lobes arise from the simultaneous reconstruction of image lines with considerably different orientations. We have previously shown in computer simulations that these difficulties could be mitigated by using a sparse transmit sequence. The present study looked at the implementation of this sequence in a clinical system. 3D TDI was acquired in vivo at 610 vol/s and compared against conventional TDI (i.e. focused transmissions). The velocity curves obtained from both methods were similar (cross correlation = 0.90+-0.11) and the full left ventricle could be imaged at HFR in a single acquisition using the 3D DW sequence. Overall, this study supports the feasibility of HFR 3D TDI in a clinical system, despite the limitations of SAP beamforming.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Cardiovascular Imaging and Dynamics
× corresponding author
# (joint) last author

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