DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Hanwook | - |
dc.contributor.author | Jung, Sung Yong | - |
dc.contributor.author | Park, Jun Hong | - |
dc.contributor.author | Kim, Jun Ho | - |
dc.contributor.author | Lee, Sang Joon | - |
dc.date.accessioned | 2019-04-07T18:51:09Z | - |
dc.date.available | 2019-04-07T18:51:09Z | - |
dc.date.created | 2018-04-23 | - |
dc.date.issued | 2018-03 | - |
dc.identifier.issn | 1600-5775 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/96053 | - |
dc.description.abstract | The X-ray PIV (particle image velocimetry) technique has been used as a non-invasive measurement modality to investigate the haemodynamic features of blood flow. However, the extraction of two-dimensional velocity field data from the three-dimensional volumetric information contained in X-ray images is technically unclear. In this study, a new two-dimensional velocity field extraction technique is proposed to overcome technological limitations. To resolve the problem of finding a correction coefficient, the velocity field information obtained by X-ray PIV and micro-PIV techniques for disturbed flow in a concentric stenosis with 50% severity was quantitatively compared. Micro-PIV experiments were conducted for single-plane and summation images, which provide similar positional information of particles as X-ray images. The correction coefficient was obtained by establishing the relationship between velocity data obtained from summation images (VS) and centre-plane images (VC). The velocity differences between VS and VC along the vertical and horizontal directions were quantitatively analysed as a function of the geometric angle of the test model for applying the present two-dimensional velocity field extraction technique to a conduit of arbitrary geometry. Finally, the two-dimensional velocity field information at arbitrary positions could be successfully extracted from X-ray images by using the correction coefficient and several velocity parameters derived from VS. | - |
dc.language | English | - |
dc.publisher | INT UNION CRYSTALLOGRAPHY | - |
dc.relation.isPartOf | JOURNAL OF SYNCHROTRON RADIATION | - |
dc.title | Enhancement of measurement accuracy of X-ray PIV in comparison with the micro-PIV technique | - |
dc.type | Article | - |
dc.identifier.doi | 10.1107/S1600577517017398 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF SYNCHROTRON RADIATION, v.25, no.2, pp.552 - 559 | - |
dc.identifier.wosid | 000426315400031 | - |
dc.citation.endPage | 559 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 552 | - |
dc.citation.title | JOURNAL OF SYNCHROTRON RADIATION | - |
dc.citation.volume | 25 | - |
dc.contributor.affiliatedAuthor | Park, Hanwook | - |
dc.contributor.affiliatedAuthor | Park, Jun Hong | - |
dc.contributor.affiliatedAuthor | Kim, Jun Ho | - |
dc.contributor.affiliatedAuthor | Lee, Sang Joon | - |
dc.identifier.scopusid | 2-s2.0-85042700727 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PARTICLE IMAGE VELOCIMETRY | - |
dc.subject.keywordPlus | PULSATILE SWIRLING FLOW | - |
dc.subject.keywordPlus | SHEAR-STRESS | - |
dc.subject.keywordPlus | CAROTID-ARTERY | - |
dc.subject.keywordPlus | BLOOD-FLOW | - |
dc.subject.keywordPlus | STENOSIS | - |
dc.subject.keywordAuthor | X-ray PIV | - |
dc.subject.keywordAuthor | micro-PIV | - |
dc.subject.keywordAuthor | stenosis | - |
dc.subject.keywordAuthor | biofluid flow | - |
dc.subject.keywordAuthor | correction coefficient | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalResearchArea | Physics | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.