Vector Doppler imaging of small vessels using directionally filtered Power Doppler images

Bas Generowicz, Luuk Verhoef, Frits Mastik, Stefanie Dijkhuizen, Nikki van Dorp, Jason Voorneveld, Johannes Bosch, Karishma Kumar, Geert Leus, More Authors

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

Abstract

Power Doppler (PD) imaging has become a staple in high frame rate ultrasound imaging due to its ability to image small vessels and slow-moving flows, such as in the case of imaging blood flow in the brain. Alternatively, color Doppler (CD) can be used to determine the one-dimensional directional information of the blood scatterers. This can help determine if the flow is arterial or venous, or distinguish between adjacent flows that have an opposite direction. Current methods for estimating 2D blood velocity vectors rely mostly on trigonometric solutions using synthetic apertures or, large plane-wave angles in transmission and sub-apertures in receive to be able to resolve the 2D vector. Relative to PD or CD techniques, these methods are more computationally expensive and have not been successfully used to image blood flow direction within micrometer sized vasculature. In this paper, we propose to use the orientations of the vessels derived from a directional spatial filter in combination with the CD signal to enhance the PD images with directional information. This approach was tested on simulated data as well as on a 2D image containing brain vasculature of a mouse.
Original languageEnglish
Title of host publication2020 IEEE International Ultrasonics Symposium (IUS)
Subtitle of host publicationProceedings
Place of PublicationPiscataway
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Electronic)978-1-7281-5448-0
ISBN (Print)978-1-7281-5449-7
DOIs
Publication statusPublished - 2020
EventIEEE International Ultrasonics Symposium 2020 - Las Vegas, United States
Duration: 6 Sep 202011 Sep 2020

Conference

ConferenceIEEE International Ultrasonics Symposium 2020
Abbreviated titleIUS 2020
CountryUnited States
CityLas Vegas
Period6/09/2011/09/20
OtherVirtual/online event due to COVID-19

Keywords

  • Color Doppler
  • Doppler
  • Gabor filter
  • Power Doppler
  • Signal Processing
  • Vector Doppler

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