A5015657914- Cardiac Imaging and Diagnostics
- Atrial Fibrillation Management and Outcomes
- Photosynthetic Processes and Mechanisms
- Cardiac Arrhythmias and Treatments
- Spectroscopy and Quantum Chemical Studies
- Cardiovascular Function and Risk Factors
- Coronary Interventions and Diagnostics
- Cardiac pacing and defibrillation studies
- Photoreceptor and optogenetics research
- Molecular spectroscopy and chirality
- Antioxidant Activity and Oxidative Stress
- Cardiac Valve Diseases and Treatments
- Advanced MRI Techniques and Applications
- Cardiovascular Disease and Adiposity
- Advanced X-ray and CT Imaging
- Algal biology and biofuel production
- Cerebrovascular and Carotid Artery Diseases
- Porphyrin and Phthalocyanine Chemistry
- Retinal Development and Disorders
- Cardiac electrophysiology and arrhythmias
- Photochromic and Fluorescence Chemistry
- Cardiac Structural Anomalies and Repair
- Medical Imaging Techniques and Applications
- Coronary Artery Anomalies
- Cardiovascular and Diving-Related Complications
RIKEN
2025
Kyoto Prefectural University of Medicine
2025
Chuo University
2025
Sakurabashi Watanabe Hospital
2015-2024
Kyoto Institute of Technology
2024
Osaka University
1988-2023
Canon (Japan)
2010-2022
RIKEN Center for Advanced Intelligence Project
2019-2021
Tokai University
2016-2019
Kyoto University
2002-2017
Abstract— The recent results of stationary‐state and time‐resolved absorption, fluorescence Raman spectroscopies some typical carotenoids are summarized. Theoretical analyses carotenoid singlet states carotenoid‐to‐bacteriochlorophyll singlet‐energy transfer also included. On the bases energies, lifetimes other properties excited in solution bound to light‐harvesting complexes, energetics dynamics function purple photosynthetic bacteria discussed with emphasis on 2A g B u + states.
We propose a compact, high-power, and high-directivity surface-emitting terahertz (THz) source based on an array of active antennas with integrated patch resonant-tunneling diodes (RTDs). An configuration antennas, each antenna two RTDs coupled by microstrip lines, enables spatial power combining improves directivity through coherent oscillation. confirmed maximum radiation 11.8 mW in prototype 6 × at oscillation frequency 0.45 THz. Parasitic low frequencies was suppressed use bias...
The authors devised the tip detection (TD) method and developed AnteOwl WR intravascular ultrasound to standardize ultrasound-based 3-dimensional wiring for intraplaque tracking in chronic total occlusion (CTO)-percutaneous coronary intervention (PCI). TD also allowed antegrade dissection re-entry (ADR). Combining TD-ADR with Conquest Pro 12 Sharpened Tip (CP12ST) wire, a new ADR wire strongest penetration force date, enabled anywhere except calcification sites.
Background The present study was designed to: (i) detect myocardial ischemia in contrast enhanced multi-slice spiral computed tomography (CE-MSCT) using adenosine triphosphate (ATP) pharmacological stress test; and (ii) evaluate the potential of ATP CE-MSCT a clinical setting. Methods Results Twelve patients underwent thallium-201 perfusion scintigraphy (MPS) 9 received conventional coronary angiography (CAG). Dual scans were performed for rest images, with without intravenous infusion (0.16...
Oscillations from 1.02 to 1.40 THz were observed at room temperature resonant-tunneling-diode (RTD)-based oscillators with integrated patch antennas by improving the mesa structure and tuning length of antenna feed point location RTD. A two-step post realized a reduction series resistance RTD, oscillation frequency significantly increased closer center around 1 THz. Experimental results agreed well analysis.
We investigated the possibility that a frequent trigger action might play role in development of persistent atrial fibrillation (PeAF) and presence substrate.In 263 consecutive patients who underwent catheter ablation (CA) for PeAF, electric cardioversion was performed at beginning procedure to determine or absence an immediate recurrence AF (IRAF). defined IRAF as reproducible within 90 s after restoration sinus rhythm by cardioversion. mean±SD 1.3±0.5 sessions CA, including pulmonary vein...
Alumina adsorption chromatography and ion-pair reversed-phase were developed to analyze the isomers of unprotonated protonated n-butylamine Schiff base retinal (RSB PRSB), respectively. Photoisomerization starting from all-trans, 11-cis 13-cis was traced for RSB in n-hexane, acetonitrile, methanol 1-butanol, PRSB methanol, acetonitrile 1-butanol. The quantum yields photoisomerization 9-cis, determined above solvents except On other hand, isomeric bound (through linkage) bovine serum albumin...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTriplet-sensitized and thermal isomerization of all-trans, 7-cis, 9-cis, 13-cis 15-cis isomers .beta.-carotene: configurational dependence the quantum yield via T1 stateMichitaka Kuki, Yasushi Koyama, Hiroyoshi NagaeCite this: J. Phys. Chem. 1991, 95, 19, 7171–7180Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://doi.org/10.1021/j100172a016Request reuse...
To investigate whether two-phase contrast material-enhanced computed tomographic (CT) findings serve as predictors of changes in left ventricular (LV) function and wall thickness (WT) after acute myocardial infarction (MI) successful angioplasty.Ethics committee approval informed consent were obtained. In 58 patients (51 men seven women; mean age, 62 years +/- 12 [standard deviation]) who had experienced an MI undergone angioplasty, (acquisitions at 45 seconds 7 minutes) contrast-enhanced CT...
Background The diagnosis of acute coronary syndrome (ACS), especially non-ST-elevation myocardial infarction and unstable angina in the emergency department (ED) still remains a challenge. Multislice computed tomography (MSCT) allows assessment not only artery stenoses occlusions, but also plaques perfusion status. Methods Results MSCT was performed 31 patients who were admitted to ED because chest pain persisting at least 30 min non-diagnostic ECG changes normal serum enzyme concentrations....
The impact of sex differences on the clinical outcomes radiofrequency catheter ablation (RFCA) atrial fibrillation (AF) is controversial. We investigated regarding efficacy and RFCA AF.We conducted a large-scale, prospective, multicentre, observational study (Kansai Plus Atrial Fibrillation Registry). enrolled 5010 consecutive patients who underwent an initial AF at 26 centres (64 ± 10 years; non-paroxysmal AF, 35.7%). median follow-up duration was 2.9 years. Female (n = 1369, 27.3%) were...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTS1 and T1 species of .beta.-carotene generated by direct photoexcitation from the all-trans, 9-cis, 13-cis, 15-cis isomers as revealed picosecond transient absorption Raman spectroscopiesHideki Hashimoto, Yasushi Koyama, Yoshinori Hirata, Noboru MatagaCite this: J. Phys. Chem. 1991, 95, 8, 3072–3076Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published inissue 1 April...
Nonalcoholic fatty liver disease is associated with a risk of coronary artery (e.g., diabetes mellitus, dyslipidemia, metabolic syndrome). We evaluated whether nonalcoholic hepatic steatosis high-risk plaques as assessed by multidetector computed tomography (CT).This retrospective study involved 414 participants suspected having disease. was defined liver-to-spleen fat ratio <1.0 and the presence appropriate characteristics coronary-artery CT angiography. High-risk were identified,...
Abstract Infrared spectra in the region 4000–60 cm −1 have been measured for acetylglycine N ‐methylamide and its deuterium homologs, CD 3 CONHCH 2 , CH ‐CONHCD CONHCD CONDCH . Normal frequencies also calculated these molecules with various conformations. The show that this compound has two crystalline modifications, form A B. their isotope shifts molecular conformation (Ψ, ϕ) of B is near (0, 120) (180, 120). short‐range factors determining peptide backbone having glycine residues are discussed.
This study assessed the efficacy of tip detection method during intravascular ultrasound (IVUS)-based 3-dimensional (3D) wiring with a new chronic total occlusion (CTO)-specific IVUS system (AnteOwl [AO-IVUS]) for CTO percutaneous coronary intervention (PCI).The developed angiography-based 3D CTO-PCI. Previously, authors produced short-tip CTO-specific (Navifocus WR [Navi-IVUS]), which has been upgraded into AO-IVUS by adding pullback transducer IVUS-based wiring.A lesion 20 mm in length...
Abstract Background Pulmonary vein (PV) reconnection is the main cause of atrial fibrillation (AF) recurrence. This study aimed to examine effect first‐pass PV isolation (PVI) on frequency during procedure and AF ablation outcomes. Methods retrospective included 446 patients with drug‐refractory (370 men, aged 64 ± 10 years) who underwent initial PVI using an open‐irrigated contact force catheter between January 2015 October 2016. We investigated spontaneous dormant conduction after...