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- Publisher Website: 10.1016/j.ultrasmedbio.2019.01.014
- Scopus: eid_2-s2.0-85062624746
- PMID: 30876671
- WOS: WOS:000464126800014
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Article: Bidirectional Ultrasound Elastographic Imaging Framework for Non-invasive Assessment of the Non-linear Behavior of a Physiologically Pressurized Artery
Title | Bidirectional Ultrasound Elastographic Imaging Framework for Non-invasive Assessment of the Non-linear Behavior of a Physiologically Pressurized Artery |
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Authors | |
Keywords | Artery Elastography Non-linear Shear modulus Strain Ultrasound |
Issue Date | 2019 |
Publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbio |
Citation | Ultrasound in Medicine and Biology, 2019, v. 45 n. 5, p. 1184-1196 How to Cite? |
Abstract | Studies of non-destructive bidirectional ultrasound assessment of non-linear mechanical behavior of the artery are scarce in the literature. We hereby propose derivation of a strain–shear modulus relationship as a new graphical diagnostic index using an ultrasound elastographic imaging framework, which encompasses our in-house bidirectional vascular guided wave imaging (VGWI) and ultrasound strain imaging (USI). This framework is used to assess arterial non-linearity in two orthogonal (i.e., longitudinal and circumferential) directions in the absence of non-invasive pressure measurement. Bidirectional VGWI estimates longitudinal (μL) and transverse (μT) shear moduli, whereas USI estimates radial strain (ɛr). Vessel-mimicking phantoms (with and without longitudinal pre-stretch) and in vitro porcine aortas under static and/or dynamic physiologic intraluminal pressure loads were examined. ɛr was found to be a suitable alternative to intraluminal pressure for representation of cyclic loading on the artery wall. Results revealed that μT values of all samples examined increased non-linearly with εr magnitude and more drastically than μL, whereas μL values of only the pre-stretched phantoms and aortas increased with ɛr magnitude. As a new graphical representation of arterial non-linearity and function, strain–shear modulus loops derived by the proposed framework over two consecutive dynamic loading cycles differentiated sample pre-conditions and corroborated direction-dependent non-linear mechanical behaviors of the aorta with high estimation repeatability. |
Persistent Identifier | http://hdl.handle.net/10722/269551 |
ISSN | 2023 Impact Factor: 2.4 2023 SCImago Journal Rankings: 0.716 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, Y | - |
dc.contributor.author | Li, H | - |
dc.contributor.author | Guo, Y | - |
dc.contributor.author | Lee, W | - |
dc.date.accessioned | 2019-04-24T08:10:00Z | - |
dc.date.available | 2019-04-24T08:10:00Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Ultrasound in Medicine and Biology, 2019, v. 45 n. 5, p. 1184-1196 | - |
dc.identifier.issn | 0301-5629 | - |
dc.identifier.uri | http://hdl.handle.net/10722/269551 | - |
dc.description.abstract | Studies of non-destructive bidirectional ultrasound assessment of non-linear mechanical behavior of the artery are scarce in the literature. We hereby propose derivation of a strain–shear modulus relationship as a new graphical diagnostic index using an ultrasound elastographic imaging framework, which encompasses our in-house bidirectional vascular guided wave imaging (VGWI) and ultrasound strain imaging (USI). This framework is used to assess arterial non-linearity in two orthogonal (i.e., longitudinal and circumferential) directions in the absence of non-invasive pressure measurement. Bidirectional VGWI estimates longitudinal (μL) and transverse (μT) shear moduli, whereas USI estimates radial strain (ɛr). Vessel-mimicking phantoms (with and without longitudinal pre-stretch) and in vitro porcine aortas under static and/or dynamic physiologic intraluminal pressure loads were examined. ɛr was found to be a suitable alternative to intraluminal pressure for representation of cyclic loading on the artery wall. Results revealed that μT values of all samples examined increased non-linearly with εr magnitude and more drastically than μL, whereas μL values of only the pre-stretched phantoms and aortas increased with ɛr magnitude. As a new graphical representation of arterial non-linearity and function, strain–shear modulus loops derived by the proposed framework over two consecutive dynamic loading cycles differentiated sample pre-conditions and corroborated direction-dependent non-linear mechanical behaviors of the aorta with high estimation repeatability. | - |
dc.language | eng | - |
dc.publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbio | - |
dc.relation.ispartof | Ultrasound in Medicine and Biology | - |
dc.subject | Artery | - |
dc.subject | Elastography | - |
dc.subject | Non-linear | - |
dc.subject | Shear modulus | - |
dc.subject | Strain | - |
dc.subject | Ultrasound | - |
dc.title | Bidirectional Ultrasound Elastographic Imaging Framework for Non-invasive Assessment of the Non-linear Behavior of a Physiologically Pressurized Artery | - |
dc.type | Article | - |
dc.identifier.email | Li, H: hli913@hku.hk | - |
dc.identifier.email | Lee, W: wnlee@hku.hk | - |
dc.identifier.authority | Lee, W=rp01663 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.ultrasmedbio.2019.01.014 | - |
dc.identifier.pmid | 30876671 | - |
dc.identifier.scopus | eid_2-s2.0-85062624746 | - |
dc.identifier.hkuros | 297318 | - |
dc.identifier.volume | 45 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | 1184 | - |
dc.identifier.epage | 1196 | - |
dc.identifier.isi | WOS:000464126800014 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0301-5629 | - |