Masanao Naya

Summary

Affiliation: Hokkaido University
Country: Japan

Publications

  1. doi request reprint Myocardial oxidative metabolism is increased due to haemodynamic overload in patients with aortic valve stenosis: assessment using 11C-acetate positron emission tomography
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo, 060 8638, Japan
    Eur J Nucl Med Mol Imaging 37:2242-8. 2010
  2. doi request reprint Myocardial beta-adrenergic receptor density assessed by 11C-CGP12177 PET predicts improvement of cardiac function after carvedilol treatment in patients with idiopathic dilated cardiomyopathy
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 50:220-5. 2009
  3. ncbi request reprint Elevated plasma plasminogen activator inhibitor type-1 is an independent predictor of coronary microvascular dysfunction in hypertension
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Circ J 71:348-53. 2007
  4. ncbi request reprint Plasma interleukin-6 and tumor necrosis factor-alpha can predict coronary endothelial dysfunction in hypertensive patients
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Hypertens Res 30:541-8. 2007
  5. doi request reprint Long-term smoking causes more advanced coronary endothelial dysfunction in middle-aged smokers compared to young smokers
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita ku, Sapporo, Japan
    Eur J Nucl Med Mol Imaging 38:491-8. 2011
  6. ncbi request reprint Smoking cessation normalizes coronary endothelial vasomotor response assessed with 15O-water and PET in healthy young smokers
    Koichi Morita
    Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 47:1914-20. 2006
  7. ncbi request reprint Decreased myocardial beta-adrenergic receptor density in relation to increased sympathetic tone in patients with nonischemic cardiomyopathy
    Takahiro Tsukamoto
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 48:1777-82. 2007
  8. ncbi request reprint Olmesartan, but not amlodipine, improves endothelium-dependent coronary dilation in hypertensive patients
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Am Coll Cardiol 50:1144-9. 2007
  9. doi request reprint Interrelation between myocardial oxidative metabolism and diastolic function in patients undergoing surgical ventricular reconstruction
    Satoru Chiba
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo, 060 8638, Japan
    Eur J Nucl Med Mol Imaging 40:349-55. 2013
  10. doi request reprint Quantification of regional myocardial blood flow estimation with three-dimensional dynamic rubidium-82 PET and modified spillover correction model
    Chietsugu Katoh
    Department of Health Sciences, Hokkaido University Graduate School of Medicine, Kita12 Nishi5, Kita ku, Sapporo, Hokkaido 060 0812, Japan
    J Nucl Cardiol 19:763-74. 2012

Collaborators

Detail Information

Publications23

  1. doi request reprint Myocardial oxidative metabolism is increased due to haemodynamic overload in patients with aortic valve stenosis: assessment using 11C-acetate positron emission tomography
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo, 060 8638, Japan
    Eur J Nucl Med Mol Imaging 37:2242-8. 2010
    ..We identified the determinants of myocardial oxidative metabolism by measuring its changes after aortic valve replacement (AVR) in patients with AS...
  2. doi request reprint Myocardial beta-adrenergic receptor density assessed by 11C-CGP12177 PET predicts improvement of cardiac function after carvedilol treatment in patients with idiopathic dilated cardiomyopathy
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 50:220-5. 2009
    ....
  3. ncbi request reprint Elevated plasma plasminogen activator inhibitor type-1 is an independent predictor of coronary microvascular dysfunction in hypertension
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Circ J 71:348-53. 2007
    ..Thus, in the present study it was investigated whether elevated plasma PAI-1 activity is associated with coronary microvascular dysfunction in hypertensive patients...
  4. ncbi request reprint Plasma interleukin-6 and tumor necrosis factor-alpha can predict coronary endothelial dysfunction in hypertensive patients
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Hypertens Res 30:541-8. 2007
    ....
  5. doi request reprint Long-term smoking causes more advanced coronary endothelial dysfunction in middle-aged smokers compared to young smokers
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita ku, Sapporo, Japan
    Eur J Nucl Med Mol Imaging 38:491-8. 2011
    ..Therefore, we compared the effects of smoking cessation on coronary vasomotor response between both young and middle-aged smokers and identified the predictor for its improvement...
  6. ncbi request reprint Smoking cessation normalizes coronary endothelial vasomotor response assessed with 15O-water and PET in healthy young smokers
    Koichi Morita
    Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 47:1914-20. 2006
    ..Therefore, the aim of this study was to assess the effect of smoking cessation on coronary vasomotor response by quantitative myocardial blood flow (MBF) measurement using (15)O-water and PET...
  7. ncbi request reprint Decreased myocardial beta-adrenergic receptor density in relation to increased sympathetic tone in patients with nonischemic cardiomyopathy
    Takahiro Tsukamoto
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Nucl Med 48:1777-82. 2007
    ....
  8. ncbi request reprint Olmesartan, but not amlodipine, improves endothelium-dependent coronary dilation in hypertensive patients
    Masanao Naya
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Am Coll Cardiol 50:1144-9. 2007
    ..We aimed to compare the effects of the angiotensin II receptor blocker (ARB) olmesartan versus the calcium channel blocker (CCB) amlodipine on coronary endothelial dysfunction in patients with hypertension...
  9. doi request reprint Interrelation between myocardial oxidative metabolism and diastolic function in patients undergoing surgical ventricular reconstruction
    Satoru Chiba
    Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo, 060 8638, Japan
    Eur J Nucl Med Mol Imaging 40:349-55. 2013
    ..We hypothesized that cardiac oxidative metabolism and diastolic dysfunction might improve in parallel to the reduction of left ventricular chamber size after SVR...
  10. doi request reprint Quantification of regional myocardial blood flow estimation with three-dimensional dynamic rubidium-82 PET and modified spillover correction model
    Chietsugu Katoh
    Department of Health Sciences, Hokkaido University Graduate School of Medicine, Kita12 Nishi5, Kita ku, Sapporo, Hokkaido 060 0812, Japan
    J Nucl Cardiol 19:763-74. 2012
    ..We sought to develop a new algorithm to reduce the spillover in image-derived blood activity curves, using non-uniform weighted least-squares fitting...
  11. ncbi request reprint Incremental diagnostic value of regional myocardial blood flow quantification over relative perfusion imaging with generator-produced rubidium-82 PET
    Keiichiro Yoshinaga
    Department of Photobiology, Hokkaido University Graduate School of Medicine, Japan
    Circ J 75:2628-34. 2011
    ..However, this possibility has not been fully studied with PET and generator-produced rubidium-82 (⁸²Rb). We evaluated regional MBF in segments with and without ischemia using ⁸²Rb PET in patients with coronary artery disease (CAD)...
  12. ncbi request reprint Myocardial flow reserve is influenced by both coronary artery stenosis severity and coronary risk factors in patients with suspected coronary artery disease
    Takahiro Tsukamoto
    Department of Cardiovascular Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
    Eur J Nucl Med Mol Imaging 33:1150-6. 2006
    ..Such a discrepancy may be explained by coronary risk factors. In this study, we aimed to investigate the influence of coronary artery stenosis severity and risk factors on MFR...
  13. doi request reprint Quantitative analysis of coronary endothelial function with generator-produced 82Rb PET: comparison with 15O-labelled water PET
    Keiichiro Yoshinaga
    Department of Photobiology, Division of Molecular Cellular Imaging, Hokkaido University Graduate School of Medicine, Kita 15 Nishi 7, Kita ku, Sapporo, Hokkaido, Japan
    Eur J Nucl Med Mol Imaging 37:2233-41. 2010
    ....
  14. doi request reprint Effects of surgical ventricular reconstruction and mitral complex reconstruction on cardiac oxidative metabolism and efficiency in nonischemic and ischemic dilated cardiomyopathy
    Takashi Sugiki
    Department of Cardiovascular Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    JACC Cardiovasc Imaging 4:762-70. 2011
    ..The aim of this study was to investigate the effects of surgical ventricular reconstruction (SVR) on cardiac efficiency as a surrogate marker for cardiac function and oxidative metabolism in patients with severe heart failure...
  15. ncbi request reprint Electrocardiographically gated ¹¹C-hydroxyephedrine PET for the simultaneous assessment of cardiac sympathetic and contractile functions
    Keiichi Magota
    Department of Radiology, Hokkaido University Hospital, Kita 14 Nishi 5, Kita ku, Sapporo, Hokkaido, 060 8648, Japan
    Ann Nucl Med 28:187-95. 2014
    ..The purpose of this study was to clarify the minimal requirement of count statistics to measure LV volumes with ECG-gated HED-PET and to investigate the reliability of the measurements...
  16. ncbi request reprint Quantification of myocardial blood flow using dynamic 320-row multi-detector CT as compared with (15)O-H 2O PET
    Yasuka Kikuchi
    Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Kita15, Nishi 7, Kita ku, Sapporo, 060 8638, Japan
    Eur Radiol 24:1547-56. 2014
    ....
  17. doi request reprint Imaging characteristics of cardiac dominant diffuse large B-cell lymphoma demonstrated with MDCT and PET/CT
    Yasuka Kikuchi
    Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Kita15, Nishi 7, Kita ku, Sapporo, Japan 060 8638
    Eur J Nucl Med Mol Imaging 40:1337-44. 2013
    ..To investigate the specific imaging findings of multidetector row CT (MDCT) and PET/CT with(18)F-FDG in cardiac dominant diffuse large B-cell lymphoma (DLBCL) in comparison with other cardiac tumours...
  18. doi request reprint Cardiac (18)F-FDG PET/CT with heparin detects infective vegetation in a patient with mechanical valve replacement
    Alisa Klaipetch
    Department of Radiology, Chiang Mai University, Chiang Mai, Thailand
    Clin Nucl Med 37:1184-5. 2012
    ..After antibiotics therapy, fever was ameliorated, and FDG PET/CT findings showed markedly decreased uptake of the lesions. FDG PET/CT is a powerful tool to detect endocarditis even in patients with no anatomical abnormalities...
  19. doi request reprint Repeatability of rest and hyperemic myocardial blood flow measurements with 82Rb dynamic PET
    Osamu Manabe
    Department of Nuclear Medicine, Hokkaido University School of Medicine, Sapporo, Japan
    J Nucl Med 50:68-71. 2009
    ..The repeatability of rest and hyperemic myocardial blood flow (MBF) measurements using 82Rb PET has not been evaluated. The aim of this study was to investigate the short-term repeatability of such measurements...
  20. ncbi request reprint Reduced 123I-BMIPP uptake implies decreased myocardial flow reserve in patients with chronic stable angina
    Hiroyuki Kageyama
    Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo 060 8638, Japan
    Eur J Nucl Med Mol Imaging 33:6-12. 2006
    ..The purpose of this study was to relate 123I-BMIPP uptake to rest myocardial blood flow (MBF), hyperemic MBF, and MFR assessed with 15O-water positron emission tomography (PET)...
  21. doi request reprint Coronary vasomotor function assessed by positron emission tomography
    Nagara Tamaki
    Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita ku, Sapporo, Hokkaido, 060 8638, Japan
    Eur J Nucl Med Mol Imaging 37:1213-24. 2010
    ....
  22. ncbi request reprint Ischaemic memory imaging using metabolic radiopharmaceuticals: overview of clinical settings and ongoing investigations
    Keiichiro Yoshinaga
    Department of Molecular Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Eur J Nucl Med Mol Imaging 41:384-93. 2014
    ..This article will overview the roles of ischaemic memory imaging both under established indications and in ongoing investigations. ..
  23. ncbi request reprint Heterogeneous reduction of myocardial oxidative metabolism in patients with ischemic and dilated cardiomyopathy using C-11 acetate PET
    Yen Wen Wu
    Department of Nuclear Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    Circ J 72:786-92. 2008
    ..The present aims were to evaluate global and regional myocardial oxidative metabolism in a well-characterized, large population with left ventricular (LV) dysfunction in order to clarify the metabolic differences between ICM and DCM...