Shinichi Tokuyasu

ORCID: 0000-0003-4524-9777
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About
Contact & Profiles
Research Areas
  • Advanced X-ray and CT Imaging
  • Radiation Dose and Imaging
  • Cardiac Imaging and Diagnostics
  • Medical Imaging Techniques and Applications
  • Advanced MRI Techniques and Applications
  • Cardiovascular Function and Risk Factors
  • Venous Thromboembolism Diagnosis and Management
  • Cardiovascular Disease and Adiposity
  • Peripheral Artery Disease Management
  • Total Knee Arthroplasty Outcomes
  • Electrical and Bioimpedance Tomography
  • Cardiovascular, Neuropeptides, and Oxidative Stress Research
  • Atomic and Subatomic Physics Research
  • Dental Radiography and Imaging
  • Pulmonary Hypertension Research and Treatments
  • Knee injuries and reconstruction techniques
  • Orthopedic Surgery and Rehabilitation
  • Photoacoustic and Ultrasonic Imaging
  • Cerebrovascular and Carotid Artery Diseases

Philips (United States)
2014-2022

Kumamoto University
2016-2017

Kumamoto Medical Center
2017

Japan Electronics College
2013-2016

Creative Commons
2016

Philips (Finland)
2013-2015

Model-based type iterative reconstruction algorithms with fast times are now available. The clinical feasibility of their has not been evaluated adequately.To investigate the effects model-based reconstruction, i.e. model (IMR), time on qualitative and quantitative image quality at low-dose chest computed tomography (CT).Thirty-one patients undergoing screening CT were enrolled. Images reconstructed using filtered back projection (FBP), hybrid (HIR), IMR algorithms. attenuation noise for all...

10.1177/0284185115575537 article EN Acta Radiologica 2015-03-27

The purpose of this study was to compare iterative model reconstruction (IMR) and hybrid (HIR) 80-kVp abdominal dynamic CT scans obtained with a low-dose contrast agent.A group 27 consecutively registered patients underwent an protocol low dose agent (300 mg I/kg). Another who had previously undergone 120-kVp filtered back projection (FBP) standard (600 I/kg) acted as control subjects. Effective dose, image noise, number, contrast-to-noise ratio were compared between the images FBP, HIR,...

10.2214/ajr.15.14518 article EN American Journal of Roentgenology 2016-03-14

Objective This study aimed to evaluate the feasibility of a low contrast, low-radiation dose protocol 80-peak kilovoltage (kVp) with prospective electrocardiography-gated cardiac computed tomography (CT) using knowledge-based iterative model reconstruction (IMR). Methods Thirty patients underwent an 80-kVp CT low-contrast agent (222-mg iodine per kilogram body weight) dose. We also enrolled 30 consecutive who were scanned 120-kVp filtered back projection standard contrast (370-mg as...

10.1097/rct.0000000000000440 article EN Journal of Computer Assisted Tomography 2016-01-01

The objective of this study was to evaluate the use 80-kVp scans with knowledge-based iterative model reconstruction (IMR) for computed tomography venography (CTV).This prospective received institutional review board approval; a previous informed consent obtained from all participants. We enrolled 30 patients suspected deep venous thrombosis or pulmonary embolism who were undergo CTV studies. images reconstructed filtered back projection (FBP), hybrid (HIR), and IMR. attenuation, image...

10.1097/rct.0000000000000600 article EN Journal of Computer Assisted Tomography 2017-04-27

Background: Step&Shoot cardiac computed tomography (CT) provides the benefit of significant reduction in radiation dose compared to helical CT acquisitions. We think that a difference occurs image quality by presence overlap reconstruction (fractionated sentence, attempted clarify). Purpose: studied utility (SSOR). Methods: evaluated SSOR comparing z-axis spatial resolution on various s scanners is possible and for those are impossible. Results: indicated better less variation over field...

10.6009/jjrt.67.905 article EN Japanese Journal of Radiological Technology 2011-01-01
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