Purpose: Optical Coherence Tomography (OCT) is a catheter-based imaging method that employs near-infrared light to produce high-resolution cross-sectional intravascular images. We propose a new segmentation technique for automatic lumen area extraction and stent strut detection in intravascular OCT images for the purpose of quantitative analysis of neointimal hyperplasia (NIH).
Methods: Two clinical dataset of frequency-domainOCT scans of the human femoral artery were analyzed. First, a segmentation method based on Fuzzy C-Means (FCM) clustering and Wavelet Transform (WT) was applied towards inner luminal contour extraction. Subsequently, stent strut positions were detected by utilizing metrics derived from the local maxima of the wavelet transform into the FCM membership function.
Results: The inner lumen contour and the position of stent strut were extracted with very high accuracy. Compared with manual segmentation by an expert physician, the automatic segmentation had an average overlap value of 0.917 ± 0.065 for all OCT images included in the study. The strut detection procedure successfully identified 6.7 ± 0.5 struts for each OCT image.
Conclusions: A new fast and robust automatic segmentation technique combining FCM and WT for lumen border extraction and strut detection in intravascular OCT images was designed and implemented. The proposed algorithm may be employed for automated quantitative morphological analysis of in-stent neointimal hyperplasia.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1118/1.4734807 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
CCN5 suppresses injury-induced vascular restenosis by inhibiting smooth muscle cell proliferation and facilitating endothelial repair via thymosin β4 and Cd9 pathway.
Eur Heart J
January 2025
State Key Laboratory of Cardiovascular Diseases and Medical Innovation Center, Shanghai Heart Failure Research Center, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
Background And Aims: Members of the CCN matricellular protein family are crucial in various biological processes. This study aimed to characterize vascular cell-specific effects of CCN5 on neointimal formation and its role in preventing in-stent restenosis (ISR) after percutaneous coronary intervention (PCI).
Methods: Stent-implanted porcine coronary artery RNA-seq and mouse injury-induced femoral artery neointima single-cell RNA sequencing were performed.
Comparison of Vessel Responses Following Combined Sirolimus-Eluting and Endothelial Progenitor Cell Stent and Ultra-Thin Sirolimus-Eluting Stent Implantation by Serial Optical Coherence Tomography and Coronary Angioscopy: A Multicenter Observational Study.
Am J Cardiol
January 2025
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
A dual-therapy sirolimus-eluting and CD34+ antibody-coated Combo Stent (DTS) has been developed to enhance endothelization and capture endothelial progenitor cells; however, vessel responses following DTS implantation remain unclear. Therefore, we evaluated early- and mid-term intravascular characteristics of DTS using intravascular imaging modalities. This multicenter, prospective, observational study enrolled 88 patients (95 lesions) who underwent DTS (43 patients, 48 lesions) or sirolimus-eluting Orsiro stent (SES, 45 patients, 47 lesions) implantation.
View Article and Find Full Text PDFImpact of procedural and patient-related risks on 1-year outcomes for patients treated with 1-month dual antiplatelet therapy followed by P2Y12 inhibitor monotherapy after biodegradable-polymer drug-eluting stent implantation.
Cardiovasc Interv Ther
January 2025
Department of Internal Medicine, Division of Cardiology, Iwate Medical University, 2-1-1 Idaidori, Yahaba-Cho, Shiwa-Gun, Iwate, 028-3695, Japan.
In clinical practice, the impact of procedural or patient-related risk factors on 1-year clinical outcomes in patients receiving 1-month of dual antiplatelet therapy (DAPT) followed by P2Y12 inhibitor monotherapy after contemporary percutaneous coronary intervention (PCI) remains unclear. Using data from the multi-center REIWA registry which included patients treated with thin-strut biodegradable polymer drug-eluting stent (BP-DES) and 1-month DAPT followed by P2Y12 inhibitor monotherapy, we assessed the primary endpoint (a composite of cardiovascular death, myocardial infarction, definite stent thrombosis, ischemic or hemorrhagic stroke, and major or minor bleeding) in patients with and without procedural (treatment of three vessels, three or more lesions, three or more stents, bifurcation with two stents, long stenting, and target of chronic total occlusion) and patient-related risk factor (renal insufficiency, anemia, peripheral vascular disease, prior or current history of heart failure and advanced age of ≥ 75 years). Among the 1,202 patients who underwent complete revascularization by PCI, 276 (23.
View Article and Find Full Text PDFA Mortise and Tenon Framework Composed of Costal Cartilage and Expanded Polytetrafluoroethylene in Rhinoplasty for Asians: Application Ⅱ of Dai Exogenous Extension Stent Concept.
J Craniofac Surg
November 2024
Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China.
Background: The septum is often underdeveloped in East Asian populations, and traditional endogenous extension stents may not adequately fulfill the requirements for rhinoplasty. Herein, we present an innovative exogenous extension framework featuring a mortise and tenon structure specifically designed for East Asians.
Methods: This framework comprises a mushroom-shaped rib cartilage component and a lancet-shaped expanded polytetrafluoroethylene (ePTFE) element, which are interconnected through a mortise and tenon design.
A Randomized Comparison of Bioheart Sirolimus-Eluting Bioresorbable Scaffold and Everolimus-Eluting Stents: The BIOHEART-II Trial.
JACC Cardiovasc Interv
January 2025
Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases of China, Beijing, China. Electronic address:
Background: First-generation bioresorbable scaffolds (BRS) increased risks of stent thrombosis and adverse events. The Bioheart scaffold is a new poly-L-lactic acid-based BRS.
Objectives: This study sought to evaluate the efficacy and safety of the BRS in patients with coronary artery disease.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!