DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, G.B | - |
dc.contributor.author | Ha, H | - |
dc.contributor.author | Kweon, J | - |
dc.contributor.author | Lee, S.J | - |
dc.contributor.author | Kim, Y.-H | - |
dc.contributor.author | Yang, D.H | - |
dc.contributor.author | Kim, N. | - |
dc.date.accessioned | 2017-07-19T13:33:12Z | - |
dc.date.available | 2017-07-19T13:33:12Z | - |
dc.date.created | 2017-02-17 | - |
dc.date.issued | 2016-05 | - |
dc.identifier.issn | 0730-725X | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/37218 | - |
dc.description.abstract | Purpose: To investigate the details of the flow structure of a plug-like jet that had a vortex ring in pulsatile stenotic phantoms using 4D flow MRI. Method: Pulsatile Newtonian flows in two stenotic phantoms with 50% and 75% reductions in area were scanned by 4D flow MRI. Blood analog working fluid was circulated via the stenotic phantom using a pulsatile pump at a constant pulsating frequency of 1 Hz. The velocity and vorticity fields of the plug-like jet with a vortex ring were quantitatively analyzed in the spatial and temporal domains. Results: Pulsatile stenotic flow showed a plug-like jet at the specific stenotic degree of 50% in our pulsatile waveform design. This plug-like jet was found at the decelerating period in the post-stenotic region of 26.4 mm (1.2 D). It revealed a vortex ring structure with vorticity strength in the range of +/- 100 s(-1). Conclusion: We observed a plug-like jet with a vortex ring in pulsatile stenotic flow by in vitro visualization using 4D flow MRI. In this plug-like jet, the local fastest flow region occurred at the post-systole phase in the post-stenotic region, which was distinguishable from a typical stenotic jet flow at systole phase. (C) 2015 Elsevier Inc. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE INC | - |
dc.relation.isPartOf | MAGNETIC RESONANCE IMAGING | - |
dc.subject | Pulsatile stenotic flow | - |
dc.subject | Plug-like jet | - |
dc.subject | Vortex ring | - |
dc.subject | 4D flow MRI | - |
dc.title | Post-stenotic plug-like jet with a vortex ring demonstrated by 4D flow MRI | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/J.MRI.2015.11.010 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | MAGNETIC RESONANCE IMAGING, v.34, no.4, pp.371 - 375 | - |
dc.identifier.wosid | 000373095800001 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 375 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 371 | - |
dc.citation.title | MAGNETIC RESONANCE IMAGING | - |
dc.citation.volume | 34 | - |
dc.contributor.affiliatedAuthor | Lee, S.J | - |
dc.identifier.scopusid | 2-s2.0-84960906035 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 3 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | WALL SHEAR-STRESS | - |
dc.subject.keywordPlus | BLOOD-FLOW | - |
dc.subject.keywordPlus | FLUID-MECHANICS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | DYNAMICS | - |
dc.subject.keywordPlus | PATTERNS | - |
dc.subject.keywordPlus | ARTERY | - |
dc.subject.keywordPlus | VALVE | - |
dc.subject.keywordAuthor | Vortex ring | - |
dc.subject.keywordAuthor | 4D flow MRI | - |
dc.subject.keywordAuthor | Pulsatile stenotic flow | - |
dc.subject.keywordAuthor | Plug-like jet | - |
dc.relation.journalWebOfScienceCategory | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Radiology, Nuclear Medicine & Medical Imaging | - |
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