Publications by authors named "Masaya Ohota"
Article Synopsis
- *Methods*: Researchers analyzed data from 533 patients who had primary PCI for STEMI, comparing outcomes between those guided by OCT and those guided by intravascular ultrasound (IVUS), using techniques to ensure fair comparisons.
- *Results*: Although patients in the OCT group were younger and healthier, the two groups had similar rates of serious complications (target lesion failure). However, cardiac deaths were lower in the OCT group compared to the IVUS group, suggesting OCT may be a safer option.
Article Synopsis
- This study compares the effectiveness of two imaging techniques, Optical Frequency Domain Imaging (OFDI) and Intravascular Ultrasound (IVUS), in guiding percutaneous coronary interventions (PCIs) for patients with stable coronary artery disease.
- The trial involved 109 patients and evaluated outcomes such as stent size and lumen area, finding that both imaging methods produced similar results in terms of stent area and long-term complications.
- The results indicate that OFDI and IVUS are comparably effective for therapeutic guidance in PCIs, with no significant differences in cardiac events over three years.
Objectives: We sought to examine associations between plaque characteristics by intravascular ultrasound (IVUS) and detectability of external elastic lamina (EEL) by optical frequency domain imaging (OFDI) in human coronary arteries.
Background: It is often challenging to detect EEL which represents vessel size by light-based imaging modalities due to light intensity attenuation through atherosclerotic plaque.
Methods: IVUS and OFDI prior to stent implantation were sequentially investigated per protocol.
Background: This study evaluated the ability of a newly developed integrated backscatter intravascular ultrasound (IB-IVUS) system (VISIWAVE, Terumo, Tokyo, Japan) to detect optical coherence tomography (OCT)-verified thin cap fibroatheroma (TCFA) and assessed the correlation with peri-procedural myocardial infarction (PMI) after percutaneous coronary intervention (PCI).
Methods And Results: One hundred culprit lesions in 100 consecutive patients with ischemic heart disease who consented to repeated IVUS and OCT prior to PCI were studied. Of 100 lesions, 48 had OCT-verified TCFA with a cap thickness <65 µm.
Background: While the utilization of integrated backscatter intravascular ultrasound (IB-IVUS) for the quantitative in vivo assessment of coronary plaque continues to grow, the validity of IB-IVUS images obtained from newly developed and conventional systems remains uncertain.
Methods And Results: To assess the accuracy and reliability of a newly developed IB-IVUS system (VISIWAVE) as compared to the conventional system (Clearview), we compared quantitative IB-IVUS plaque characteristics in the 2 systems using 125 post-mortem specimens from 26 coronary arteries in 11 cadavers, as well as using 200 clinical plaques in 32 patients undergoing coronary intervention. The overall agreement between the histological and IB-IVUS diagnoses using VISIWAVE (Cohen's κ=0.