Kenichi Fujii

ORCID: 0000-0001-7721-2990
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About
Contact & Profiles
Research Areas
  • Coronary Interventions and Diagnostics
  • Cardiac Imaging and Diagnostics
  • Peripheral Artery Disease Management
  • Cerebrovascular and Carotid Artery Diseases
  • Acute Myocardial Infarction Research
  • Cardiac Valve Diseases and Treatments
  • Vascular Procedures and Complications
  • Aortic aneurysm repair treatments
  • Cardiovascular Function and Risk Factors
  • Venous Thromboembolism Diagnosis and Management
  • Cardiovascular Disease and Adiposity
  • Advanced MRI Techniques and Applications
  • Optical Coherence Tomography Applications
  • MRI in cancer diagnosis
  • Cardiac Structural Anomalies and Repair
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Cardiac tumors and thrombi
  • Aortic Thrombus and Embolism
  • Radiomics and Machine Learning in Medical Imaging
  • Lipoproteins and Cardiovascular Health
  • Nitric Oxide and Endothelin Effects
  • Cardiovascular Issues in Pregnancy
  • Atrial Fibrillation Management and Outcomes
  • Diagnosis and Treatment of Venous Diseases
  • Anesthesia and Neurotoxicity Research

Kansai Medical University
2019-2025

Advanced Institute of Industrial Technology
2022

Hyogo Medical University
2011-2020

Higashi Takarazuka Satoh Hospital
2016-2020

Aichi Medical University
2009-2019

Hyogo Brain and Heart Center
2019

Chiba University
2018-2019

Hyogo University
2016

Stanford University
2016

Stanford Medicine
2016

Background— We used intravascular ultrasound (IVUS) to evaluate recurrence after sirolimus-eluting stent (SES) implantation treatment of in-stent restenosis (ISR). Methods and Results— Forty-eight ISR lesions (41 patients with objective evidence ischemia) were treated SES. Recurrent was identified in 11 (all focal); repeat revascularization performed 10. These compared 16 (19 lesions) without as documented by angiography. Nine recurrent had a minimum area (MSA) <5.0 mm 2 versus 5 19...

10.1161/01.cir.0000121327.67756.19 article EN Circulation 2004-03-02

It is not clear why some plaque ruptures lead to acute coronary syndromes (ACS) but others do not.We analyzed 80 in 74 patients and compared culprit lesions of ACS with nonculprit non-ACS patients; both were studied 6 54 patients. Intravascular ultrasound findings suggesting thrombus observed more frequently (n=35) (n=19) (n=26): 60% versus 32% 8% (P<0.001). At the minimal lumen site, smaller areas (3.3+/-1.5 5.4+/-2.6 6.1+/-2.0 mm2, P<0.001) greater area stenosis (61+/-15% 50+/-14%...

10.1161/01.cir.0000097121.95451.39 article EN Circulation 2003-11-11

Little is known about causes of intimal hyperplasia (IH) after sirolimus-eluting stent (SES) implantation.Intravascular ultrasound was performed in 24 lesions with intra-SES restenosis and a comparison group 25 nonrestenotic SESs. To assess strut distribution, the maximum interstrut angle measured protractor centered on stent, visible struts were counted normalized for number cells. In SES patients, minimum lumen site compared image slices 2.5, 5.0, 7.5, 10.0 mm proximal distal to this site....

10.1161/01.cir.0000148371.53174.05 article EN Circulation 2004-11-23

The cerebellomedullary fissure, the only entrance or exit to fourth ventricle, is surrounded rostrally by cerebellar tonsils and biventral lobules caudally medulla oblongata, tela choroidea, lateral recesses. This fissure an important route in operations on ventricle. We studied microsurgical magnetic resonance imaging (MRI) anatomy of using autopsied normal cerebellum. MRI revealed that visible as a slit indicated enhanced choroid plexus flocculus. Oriented anatomical information thus...

10.1227/00006123-199203000-00003 article EN Neurosurgery 1992-03-01

Complex services may be dynamically composed through combining distributed components on demand (i.e., when requested by a user) in order to provide new without preinstallation. Several systems have been proposed compose services. However, they require users request manner that is not intuitive the users. In allow user service an form (e.g., using natural language), this paper proposes semantics-based composition architecture. The architecture obtains semantics of form, and composes based...

10.1109/jsac.2005.857202 article EN IEEE Journal on Selected Areas in Communications 2005-12-01

This study was designed to determine the age-related changes in endothelium-dependent hyperpolarization acetylcholine (ACh) and its contribution relaxation isolated mesenteric artery from normotensive hypertensive rats. Membrane potentials contractions were recorded arteries male Wistar-Kyoto (WKY) rats spontaneously (SHR) that 5-6 wk old (young), 6-8 mo (adult), 20-26 (aged). Endothelium-dependent hyperpolarizations produced by ACh, applied both at resting state of membrane under conditions...

10.1152/ajpheart.1993.265.2.h509 article EN AJP Heart and Circulatory Physiology 1993-08-01

Alterations in voltage-dependent Ca2+ channels the arterial smooth muscle cells of spontaneously hypertensive rats (SHR) were investigated using whole-cell voltage clamp and compared with Wistar-Kyoto (WKY) rats. Single freshly isolated from resistance mesenteric arteries 4- to 5-week-old (young) 16- 18-week-old (adult) SHR. Elevated blood pressure was only evident adult SHR, not young In rats, channel current density (current amplitude normalized by cell capacitance) significantly higher (P...

10.1161/01.res.73.6.1090 article EN Circulation Research 1993-12-01

Summary— The effects of cromakalim, a potassium channel activating drug, have been studied on isolated detrusor muscle strips from normal Landrace boar, and unstable mini‐pig human bladder. Cromakalim abolished spontaneous activity in all but did not abolish the ability any specimens to respond carbachol, increased extracellular K + or transmural nerve stimulation. Intravenous infusion cromakalim urethral obstructed caused characteristic contractions associated with bladder outflow...

10.1111/j.1464-410x.1989.tb05191.x article EN British Journal of Urology 1989-03-01

Vasomotion is a rhythmic change in vascular caliber that has been described vivo mainly peripheral arterioles. In this study, we have characterized vasomotion large artery of the brain vivo. anesthetized rats, spontaneous was observed 38 47 basilar arteries visualized through cranial window. Base-line arterial diameter 259 +/- 9 (means SE) microns. Under control conditions, frequency 4.8 0.2 cycles/min, and amplitude 19 2% mean diameter. usually occurred simultaneously along entire length...

10.1152/ajpheart.1990.258.6.h1829 article EN AJP Heart and Circulatory Physiology 1990-06-01

This study evaluated whether optical frequency domain imaging (OFDI) could identify various coronary calcifications and accurately measure calcification thickness in comparison with histopathology. A total of 902 pathological cross-sections from 44 artery specimens human cadavers were examined to compare OFDI histological images. Histological was classified into four different types: (i) superficial dense calcified plates, (ii) deep intimal calcification, (iii) scattered microcalcification,...

10.1093/ehjci/jew054 article EN European Heart Journal - Cardiovascular Imaging 2016-04-13
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