Publications by authors named "Seitarou Ebara"
Article Synopsis
- A study was conducted to evaluate chronic stent recoil in severely calcified coronary lesions treated with thin strut stents after a procedure called rotational atherectomy.
- In a sample of 28 lesions, there was no significant change in minimal stent area over 8 months, although neointimal hyperplasia was noted in patients.
- Stent recoil was observed in 36% of lesions, primarily occurring in areas without calcification, while overall calcium angles showed significant changes, suggesting that although stent recoil can happen, it rarely leads to restenosis.
Objectives: Using optical coherence tomography (OCT), we evaluated the effect of a cutting balloon (CB) compared with a conventional balloon after rotational atherectomy (RA) and before stenting in severely calcified coronary lesions.
Background: A CB is designed to create discrete incisions to facilitate fracture of severely calcified plaque.
Methods: OCT was performed preintervention (if possible), post-RA, and poststent implantation.
The relationship between epicardial adipose tissue volume (EATV) and plaque vulnerability in non-culprit coronary lesions is not clearly understood.Fifty-four consecutive patients/158 lesions with suspected coronary artery disease underwent computed tomography (CT) and 40 MHz intravascular ultrasound imaging (iMap-IVUS) in cardiac catheterization. Cross-sectional CT slices were semiautomatically traced from base to apex of the heart.
View Article and Find Full Text PDFBackground: Optical coherence tomographic (OCT) morphologies associated with lesion progression are not well studied. The aim of this study was to determine the morphological change for untreated lesion progression using both OCT and intravascular ultrasound (IVUS).
Methods And Results: We used baseline and 8-month follow-up 3-vessel OCT and IVUS to assess 127 nonculprit lesions (IVUS plaque burden ≥40%) in 45 patients with stable angina after target lesion treatment.
To assess the relationship between epicardial adipose tissue volume (EATV) and plaque vulnerability in significant coronary stenosis using a 40-MHz intravascular ultrasound (IVUS) imaging system (iMap-IVUS), we analyzed 130 consecutive patients with coronary stenosis who underwent dual-source computed tomography (CT) and cardiac catheterization. Culprit lesions were imaged by iMap-IVUS before stenting. The iMAP-IVUS system classified coronary plaque components as fibrous, lipid, necrotic, or calcified tissue, based on the radiofrequency spectrum.
View Article and Find Full Text PDFObjective: To investigate the efficacy and safety of a second-generation drug-eluting stent (DES) for in-stent restenosis (ISR) after first-generation DES implantation.
Background: The everolimus-eluting stent is a second-generation DES that is very effective for de novo coronary lesions.
Methods: The subjects were 145 consecutive patients who underwent re-stenting, including 93 given a first-generation DES and 52 given a second-generation DES.