H Wen

Summary

Affiliation: National Institutes of Health
Country: USA

Publications

  1. pmc Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung, and Blood Institute National Institutes of Health, Bethesda, MD 20892, USA
    IEEE Trans Biomed Eng 45:119-24. 1998
  2. ncbi request reprint Feasibility of biomedical applications of Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics National Heart, Lung and Blood Institute National Institutes of Health Bethesda, MD 20892 1061, USA
    Ultrason Imaging 22:123-36. 2000
  3. pmc Volumetric Hall effect tomography--a feasibility study
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892 1061, USA
    Ultrason Imaging 21:186-200. 1999
  4. pmc Ultrasonic imaging of the electroacoustic effect in macromolecular gels
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Ultrason Imaging 20:288-97. 1998
  5. pmc Shielding of piezoelectric ultrasonic probes in Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Ultrason Imaging 20:206-20. 1998
  6. pmc High-sensitivity fiber-optic ultrasound sensors for medical imaging applications
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
    Ultrason Imaging 20:103-12. 1998
  7. ncbi request reprint Reduction of field of view in MRI using a surface-spoiling local gradient insert
    D G Wiesler
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892 1061, USA
    J Magn Reson Imaging 8:981-8. 1998
  8. pmc Mapping the velocity vector onto the spin vector: two-dimensional velocity-selective spin excitation for MR flow imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Magn Reson Med 46:767-72. 2001
  9. pmc Mixed echo train acquisition displacement encoding with stimulated echoes: an optimized DENSE method for in vivo functional imaging of the human heart
    A H Aletras
    Laboratory of Cardiac Energetics, NHLBI, NIH, Bethesda, Maryland 20892 1061, USA
    Magn Reson Med 46:523-34. 2001
  10. pmc PCATMIP: enhancing signal intensity in diffusion-weighted magnetic resonance imaging
    V M Pai
    Laboratory of Cardiac Energetics, NHLBI, National Institutes of Health, Bethesda, Maryland 20892 1061, USA
    Magn Reson Med 65:1611-9. 2011

Collaborators

Detail Information

Publications12

  1. pmc Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung, and Blood Institute National Institutes of Health, Bethesda, MD 20892, USA
    IEEE Trans Biomed Eng 45:119-24. 1998
    ..The contrast mechanism and signal-to-noise issues are discussed. Since electrical parameters vary widely among tissue types and pathological states, HE imaging may be a useful tool for biological research and medical diagnosis...
  2. ncbi request reprint Feasibility of biomedical applications of Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics National Heart, Lung and Blood Institute National Institutes of Health Bethesda, MD 20892 1061, USA
    Ultrason Imaging 22:123-36. 2000
    ..This technique is able to produce high-resolution volume images of samples in vitro that reflect their electrical heterogeneity. However, quantitative measurements of electrical constants are not practical for complex samples...
  3. pmc Volumetric Hall effect tomography--a feasibility study
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892 1061, USA
    Ultrason Imaging 21:186-200. 1999
    ..The images reflect several limitations of the current scanning method and point to directions for further hardware development. The inherent limitations of Hall effect imaging are also discussed in light of these results...
  4. pmc Ultrasonic imaging of the electroacoustic effect in macromolecular gels
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Ultrason Imaging 20:288-97. 1998
    ..This method is demonstrated in agar gel and egg-white protein phantoms. The image contrast mechanism is also discussed...
  5. pmc Shielding of piezoelectric ultrasonic probes in Hall effect imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Ultrason Imaging 20:206-20. 1998
    ..These methods are able to reduce the noise to levels below the random thermal noise, thereby improving the signal-to-noise ratio in HEI by two orders of magnitude...
  6. pmc High-sensitivity fiber-optic ultrasound sensors for medical imaging applications
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
    Ultrason Imaging 20:103-12. 1998
    ..It is possible to make focal sensors with these designs, and several schemes are discussed. Because of the minimum blending radius of optical fibers, the designs are suitable for single element sensors rather than for arrays...
  7. ncbi request reprint Reduction of field of view in MRI using a surface-spoiling local gradient insert
    D G Wiesler
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892 1061, USA
    J Magn Reson Imaging 8:981-8. 1998
    ....
  8. pmc Mapping the velocity vector onto the spin vector: two-dimensional velocity-selective spin excitation for MR flow imaging
    H Wen
    Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Magn Reson Med 46:767-72. 2001
    ....
  9. pmc Mixed echo train acquisition displacement encoding with stimulated echoes: an optimized DENSE method for in vivo functional imaging of the human heart
    A H Aletras
    Laboratory of Cardiac Energetics, NHLBI, NIH, Bethesda, Maryland 20892 1061, USA
    Magn Reson Med 46:523-34. 2001
    ..Data processing requires minimal user intervention and provides a rapid quantitative feedback on the MRI scanner for evaluating cardiac function. Published 2001 Wiley-Liss, Inc...
  10. pmc PCATMIP: enhancing signal intensity in diffusion-weighted magnetic resonance imaging
    V M Pai
    Laboratory of Cardiac Energetics, NHLBI, National Institutes of Health, Bethesda, Maryland 20892 1061, USA
    Magn Reson Med 65:1611-9. 2011
    ....
  11. ncbi request reprint The overall pattern of cardiac contraction depends on a spatial gradient of myosin regulatory light chain phosphorylation
    J S Davis
    Molecular Physiology Section, Cardiology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
    Cell 107:631-41. 2001
    ..To demonstrate the importance of cardiac light chain phosphorylation, we cloned a myosin light chain kinase from a human heart and have identified a gain-in-function mutation in two individuals with cardiac hypertrophy...
  12. ncbi request reprint A gradient of myosin regulatory light-chain phosphorylation across the ventricular wall supports cardiac torsion
    J S Davis
    Molecular Physiology Section, Cardiology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
    Cold Spring Harb Symp Quant Biol 67:345-52. 2002