Venous vessel boundary delineation at high field using sigmoid-SWI

Amanda Ching Lih Ng, Gary Francis Egan, Zang-Hee Cho, Leigh Andrea Johnston

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Susceptibility Weighted Imaging (SWI) is an increasingly utilised MRI technique for enhancing image contrast by attenuating magnitude data with a mask derived from the phase data. It is particularly useful for venography, however at higher field strengths, the effects of localised magnetic susceptibility differences lead to ill-defined edges within SWI images and overestimation of widths in large veins oriented perpendicular to the main field. We propose a variation on SWI, sigmoid-SWI, that removes the vessel boundary artefacts, resulting in clearer visibility of edges and more accurate widths of venous vessels.

Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsNigel Lovell
Place of PublicationUnited States
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages2817-2820
Number of pages4
Volume2011
ISBN (Print)1557-170X
DOIs
Publication statusPublished - 2011
EventInternational Conference of the IEEE Engineering in Medicine and Biology Society 2011 - Boston Marriott Copley Place Hotel, Boston, United States of America
Duration: 30 Aug 20113 Sep 2011
Conference number: 33

Conference

ConferenceInternational Conference of the IEEE Engineering in Medicine and Biology Society 2011
Abbreviated titleEMBC 2011
CountryUnited States of America
CityBoston
Period30/08/113/09/11

Cite this

Ng, A. C. L., Egan, G. F., Cho, Z-H., & Johnston, L. A. (2011). Venous vessel boundary delineation at high field using sigmoid-SWI. In N. Lovell (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2011, pp. 2817-2820). [6090779] United States: IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IEMBS.2011.6090779
Ng, Amanda Ching Lih ; Egan, Gary Francis ; Cho, Zang-Hee ; Johnston, Leigh Andrea. / Venous vessel boundary delineation at high field using sigmoid-SWI. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. editor / Nigel Lovell. Vol. 2011 United States : IEEE, Institute of Electrical and Electronics Engineers, 2011. pp. 2817-2820
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Ng, ACL, Egan, GF, Cho, Z-H & Johnston, LA 2011, Venous vessel boundary delineation at high field using sigmoid-SWI. in N Lovell (ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 2011, 6090779, IEEE, Institute of Electrical and Electronics Engineers, United States, pp. 2817-2820, International Conference of the IEEE Engineering in Medicine and Biology Society 2011, Boston, United States of America, 30/08/11. https://doi.org/10.1109/IEMBS.2011.6090779

Venous vessel boundary delineation at high field using sigmoid-SWI. / Ng, Amanda Ching Lih; Egan, Gary Francis; Cho, Zang-Hee; Johnston, Leigh Andrea.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. ed. / Nigel Lovell. Vol. 2011 United States : IEEE, Institute of Electrical and Electronics Engineers, 2011. p. 2817-2820 6090779.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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AB - Susceptibility Weighted Imaging (SWI) is an increasingly utilised MRI technique for enhancing image contrast by attenuating magnitude data with a mask derived from the phase data. It is particularly useful for venography, however at higher field strengths, the effects of localised magnetic susceptibility differences lead to ill-defined edges within SWI images and overestimation of widths in large veins oriented perpendicular to the main field. We propose a variation on SWI, sigmoid-SWI, that removes the vessel boundary artefacts, resulting in clearer visibility of edges and more accurate widths of venous vessels.

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Ng ACL, Egan GF, Cho Z-H, Johnston LA. Venous vessel boundary delineation at high field using sigmoid-SWI. In Lovell N, editor, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 2011. United States: IEEE, Institute of Electrical and Electronics Engineers. 2011. p. 2817-2820. 6090779 https://doi.org/10.1109/IEMBS.2011.6090779