High resolution three-dimensional robotic synthetic tracked aperture ultrasound imaging: Feasibility study

Haichong K. Zhang, Ting Yun Fang, Rodolfo Finocchi, Emad Boctor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Three dimensional (3D) ultrasound imaging is becoming a standard mode for medical ultrasound diagnoses. Conventional 3D ultrasound imaging is mostly scanned either by using a two dimensional matrix array or by motorizing a one dimensional array in the elevation direction. However, the former system is not widely assessable due to its cost, and the latter one has limited resolution and field-of-view in the elevation axis. Here, we propose a 3D ultrasound imaging system based on the synthetic tracked aperture approach, in which a robotic arm is used to provide accurate tracking and motion. While the ultrasound probe is moved by a robotic arm, each probe position is tracked and can be used to reconstruct a wider field-of-view as there are no physical barriers that restrict the elevational scanning. At the same time, synthetic aperture beamforming provides a better resolution in the elevation axis. To synthesize the elevational information, the single focal point is regarded as the virtual element, and forward and backward delay-andsum are applied to the radio-frequency (RF) data collected through the volume. The concept is experimentally validated using a general ultrasound phantom, and the elevational resolution improvement of 2.54 and 2.13 times was measured at the target depths of 20 mm and 110 mm, respectively.

Original languageEnglish (US)
Title of host publicationMedical Imaging 2017
Subtitle of host publicationUltrasonic Imaging and Tomography
PublisherSPIE
Volume10139
ISBN (Electronic)9781510607231
DOIs
StatePublished - 2017
EventMedical Imaging 2017: Ultrasonic Imaging and Tomography - Orlando, United States
Duration: Feb 15 2017Feb 16 2017

Other

OtherMedical Imaging 2017: Ultrasonic Imaging and Tomography
CountryUnited States
CityOrlando
Period2/15/172/16/17

Keywords

  • elevational focusing
  • synthetic aperture
  • three-dimensional ultrasound imaging
  • three-dimensional visualization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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