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A comparison between image and signal sharpness-based axial localization of ultrasound scatterers

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

Original languageEnglish
Title of host publication 2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI 2019)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)978-1-5386-3641-1
DOIs
Publication statusPublished - 11 Jul 2019
Event2019 IEEE 16th International Symposium on Biomedical Imaging - Hilton Molino Stucky, Venice, Italy
Duration: 8 Apr 201911 Apr 2019
https://biomedicalimaging.org/2019/

Publication series

NameProceedings (International Symposium on Biomedical Imaging)
PublisherIEEE
ISSN (Electronic)1945-8452

Conference

Conference2019 IEEE 16th International Symposium on Biomedical Imaging
Abbreviated titleISBI 2019
CountryItaly
CityVenice
Period8/04/1911/04/19
Internet address

Abstract

Super-resolution ultrasound imaging deploys contrast microbubble (MB) tracking to delineate micro-vessels. The potential application spans to a large number of diseases which cause compromised vascular networks. Current superresolution methods are mainly based on image processing. Sharpness-based localization is an alternative to such methods for scatterer localization in the axial direction, and can be implemented using both image and signal data. A 7-MHz, linear ultrasound transducer (λ=212 μm) and the Synthetic Aperture Real-time Ultrasound System (SARUS) were used to image a wire-target (point scatterer) at different depth positions. The method predicts a depth estimate and its difference from the true scatterer position demonstrates its accuracy. This average difference can be as low as 27.41 μm (or ≈ λ/8) for the image-derived sharpness and drops to 2.84 μm (or ≈ λ/75) when the signals are used. These figures were calculated for a 8 mm depth range, which can be extended subject to further processing. The process of image formation involves interpolation and logarithmic compression that reduce the overall performance of the method when using image data. Such details may be significant when reconstructing micro-vessels of the order of tens of micrometres in diameter.

    Research areas

  • ultrasonic imaging, wires, Image resolution, Signal resolution, imaging, untrasonic variable measurement, Standards

Event

2019 IEEE 16th International Symposium on Biomedical Imaging

8/04/1911/04/19

Venice, Italy

Event: Conference

ID: 101317310