Particle image velocimetry on simulated 3D ultrafast ultrasound from pediatric matrix TEE transducers

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1 Citation (Scopus)

Abstract

Ultrafast 3D transesophageal echocardiographic (TEE) imaging, combined with 3D echo particle image velocimetry (ePIV), would be ideal for tracking the complex blood flow patterns in the heart. We are developing a miniature pediatric matrix TEE transducer that employs micro-beamforming (μBF) and allows high framerate in 3D. In this paper, we assess the feasibility of 3D ePIV with a high frame rate, small aperture transducer and the influence of the micro-beamforming technique. We compare the results of 3D ePIV on simulated images using the μBF transducer and an idealized, fully sampled (FS) matrix transducer. For the two transducers, we have simulated high-framerate imaging of an 8.4mm diameter artery having a known 4D velocity field. The simulations were performed in FieldII. 1000 3D volumes, at a rate of 1000 volumes/sec, were created using a single diverging transmission per volume. The error in the 3D velocity estimation was measured by comparing the ePIV results of both transducers to the ground truth. The results on the simulated volumes show that ePIV can estimate the 4D velocity field of the arterial phantom using these small-aperture transducers suitable for pediatric 3D TEE. The μBF transducer (RMSE 44.0%) achieved comparable ePIV accuracy to that of the FS transducer (RMSE 42.6%).

Original languageEnglish
Title of host publicationMedical Imaging 2017: Ultrasonic Imaging and Tomography
PublisherSPIE
Volume10139
ISBN (Electronic)9781510607231
DOIs
Publication statusPublished - 2017
Externally publishedYes
EventMedical Imaging 2017: Ultrasonic Imaging and Tomography - Orlando, United States
Duration: 15 Feb 201716 Feb 2017

Conference

ConferenceMedical Imaging 2017: Ultrasonic Imaging and Tomography
CountryUnited States
CityOrlando
Period15/02/1716/02/17

Keywords

  • 3D Ultrasound
  • Blood Velocity
  • Particle Image Velocimetry
  • Speckle Tracking
  • TEE
  • Ultrafast Ultrasound

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