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dc.contributor.authorWang, Hsien-Yien_US
dc.contributor.authorWu, Cho-Hanen_US
dc.contributor.authorChen, Chien-Yueen_US
dc.contributor.authorLin, Bor-Shyhen_US
dc.date.accessioned2014-12-08T15:36:20Z-
dc.date.available2014-12-08T15:36:20Z-
dc.date.issued2014-06-01en_US
dc.identifier.issn0018-9294en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TBME.2014.2308906en_US
dc.identifier.urihttp://hdl.handle.net/11536/24682-
dc.description.abstractHemodialysis is the most common treatment for patients with end-stage renal disease. For hemodialysis, consistently functional vascular access must be surgically created with an anastomosis of artery and vein, referred to as an arteriovenous fistula (AVF). However, AVF dysfunction may occur over time. Angiography and Doppler ultrasound are usually used to detect the flow or the diameter of the AVF. But they require well-trained operators and are expensive, and even angiography is invasive. In this study, a noninvasive approach based on stethoscope auscultation for monitoring AVF stenosis was proposed. Here, a wireless blood flow sound recorder was designed to record blood flow sounds wirelessly. In order to effectively extract the varying feature of blood flow sounds for AVF stenosis, the 2-D feature pattern built from S-transform was also proposed as the feature in the AVF stenosis detecting algorithm. Different from other frequency-related coefficients, the feature pattern can contain the information of blood flow sounds in time and frequency domains simultaneously. Preliminary findings showed that the proposed approach can provide high-quality estimation of AVF stenosis (positive predictive value=87.84% and sensitivity = 89.24%).en_US
dc.language.isoen_USen_US
dc.subjectArteriovenous fistula (AVF)en_US
dc.subjectblood flow soundsen_US
dc.subjecthemodialysisen_US
dc.subjectstethoscope auscultationen_US
dc.subjectS-transformen_US
dc.titleNovel Noninvasive Approach for Detecting Arteriovenous Fistula Stenosisen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TBME.2014.2308906en_US
dc.identifier.journalIEEE TRANSACTIONS ON BIOMEDICAL ENGINEERINGen_US
dc.citation.volume61en_US
dc.citation.issue6en_US
dc.citation.spage1851en_US
dc.citation.epage1857en_US
dc.contributor.department影像與生醫光電研究所zh_TW
dc.contributor.departmentInstitute of Imaging and Biomedical Photonicsen_US
dc.identifier.wosnumberWOS:000337736000029-
dc.citation.woscount0-
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