Virtually Extended Array Imaging Improves Lateral Resolution in High Frame Rate Volumetric Imaging

Mehdi Soozande, Fabian Fool, Maysam Shabanimotlagh, Michiel Pertijs, Martin Verweij, Rik Vos, Johan G. Bosch, Nico de Jong

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

Matrix arrays for endoscopic and catheter-based applications are restricted to small physical apertures, which limits their lateral resolution. In addition, when aiming for high volume rate imaging and utilizing the recent methods of transmitting a single or few diverging waves (DW), lateral resolution further deteriorates. In this work, we propose a high frame rate transmission scheme which outperforms alternative methods in lateral resolution. To improve the lateral resolution and side-lobe level, we propose to transmit only on a sub-aperture on either side of the array and apply a specific weighting function to received data. Compared to single-DW imaging, the proposed Sub-aperture Virtually Extended Array reduces the PSF width and sidelobe level by 16% and 5dB respectively and provides a similar SNR at the cost of halving the frame rate.
Original languageEnglish
Title of host publication 2018 IEEE International Ultrasonics Symposium, IUS 2018
EditorsK. Hashimoto, C. Ruppel
PublisherIEEE
Number of pages4
Volume2018-October
ISBN (Electronic)978-1-5386-3425-7
DOIs
Publication statusPublished - 2018
Event2018 IEEE International Ultrasonics Symposium, IUS 2018 - Portopia Hotel, Kobe, Japan
Duration: 22 Oct 201825 Oct 2018

Conference

Conference2018 IEEE International Ultrasonics Symposium, IUS 2018
Abbreviated titleIUS 2018
CountryJapan
CityKobe
Period22/10/1825/10/18

Keywords

  • 3-D ultrasound imaging
  • co-array analysis
  • high frame rate imaging

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