Hamid Dehghani

Summary

Affiliation: University of Exeter
Country: UK

Publications

  1. ncbi request reprint Numerical modelling errors in electrical impedance tomography
    Hamid Dehghani
    School of Physics, University of Exeter, UK
    Physiol Meas 28:S45-55. 2007
  2. pmc Spectrally resolved bioluminescence tomography using the reciprocity approach
    Hamid Dehghani
    School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom
    Med Phys 35:4863-71. 2008
  3. doi request reprint Image reconstruction in diffuse optical tomography based on simplified spherical harmonics approximation
    Michael Chu
    School of Physics, University of Exeter, EX4 1EZ, UK
    Opt Express 17:24208-23. 2009
  4. ncbi request reprint Wavelength dependence of sensitivity in spectral diffuse optical imaging: effect of normalization on image reconstruction
    Matthew E Eames
    School of Physics, Stocker Road, University of Exeter, United Kingdom
    Opt Express 16:17780-91. 2008
  5. pmc Wavelength band optimization in spectral near-infrared optical tomography improves accuracy while reducing data acquisition and computational burden
    Matthew E Eames
    University of Exeter, School of Physics, Exeter, United Kingdom
    J Biomed Opt 13:054037. 2008
  6. doi request reprint Light transport in biological tissue using three-dimensional frequency-domain simplified spherical harmonics equations
    Michael Chu
    School of Physics, University of Exeter, Exeter EX4 1EZ, UK
    Phys Med Biol 54:2493-509. 2009
  7. ncbi request reprint Electrical impedance tomography of human brain function using reconstruction algorithms based on the finite element method
    Andrew P Bagshaw
    Department of Clinical Neurophysiology, University College London, UK
    Neuroimage 20:752-64. 2003
  8. pmc Implementation of a computationally efficient least-squares algorithm for highly under-determined three-dimensional diffuse optical tomography problems
    Phaneendra K Yalavarthy
    Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA
    Med Phys 35:1682-97. 2008
  9. pmc Imaging breast adipose and fibroglandular tissue molecular signatures by using hybrid MRI-guided near-infrared spectral tomography
    Ben Brooksby
    Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
    Proc Natl Acad Sci U S A 103:8828-33. 2006
  10. ncbi request reprint In vivo hemoglobin and water concentrations, oxygen saturation, and scattering estimates from near-infrared breast tomography using spectral reconstruction
    Subhadra Srinivasan
    Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
    Acad Radiol 13:195-202. 2006

Collaborators

Detail Information

Publications19

  1. ncbi request reprint Numerical modelling errors in electrical impedance tomography
    Hamid Dehghani
    School of Physics, University of Exeter, UK
    Physiol Meas 28:S45-55. 2007
    ....
  2. pmc Spectrally resolved bioluminescence tomography using the reciprocity approach
    Hamid Dehghani
    School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom
    Med Phys 35:4863-71. 2008
    ..75 h...
  3. doi request reprint Image reconstruction in diffuse optical tomography based on simplified spherical harmonics approximation
    Michael Chu
    School of Physics, University of Exeter, EX4 1EZ, UK
    Opt Express 17:24208-23. 2009
    ....
  4. ncbi request reprint Wavelength dependence of sensitivity in spectral diffuse optical imaging: effect of normalization on image reconstruction
    Matthew E Eames
    School of Physics, Stocker Road, University of Exeter, United Kingdom
    Opt Express 16:17780-91. 2008
    ..The hypersensitivity resulting in boundary artifacts are shown to be minimized with only a small additional computational cost...
  5. pmc Wavelength band optimization in spectral near-infrared optical tomography improves accuracy while reducing data acquisition and computational burden
    Matthew E Eames
    University of Exeter, School of Physics, Exeter, United Kingdom
    J Biomed Opt 13:054037. 2008
    ..Additionally, the judicious use of these spectral windows reduces the amount of data needed for full spectral tomographic imaging by 50%, therefore increasing computation time dramatically...
  6. doi request reprint Light transport in biological tissue using three-dimensional frequency-domain simplified spherical harmonics equations
    Michael Chu
    School of Physics, University of Exeter, Exeter EX4 1EZ, UK
    Phys Med Biol 54:2493-509. 2009
    ....
  7. ncbi request reprint Electrical impedance tomography of human brain function using reconstruction algorithms based on the finite element method
    Andrew P Bagshaw
    Department of Clinical Neurophysiology, University College London, UK
    Neuroimage 20:752-64. 2003
    ....
  8. pmc Implementation of a computationally efficient least-squares algorithm for highly under-determined three-dimensional diffuse optical tomography problems
    Phaneendra K Yalavarthy
    Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA
    Med Phys 35:1682-97. 2008
    ..Use of these new alternative forms becomes effective when the ratio of the number of imaging property parameters exceeds the number of measurements by a factor greater than 2...
  9. pmc Imaging breast adipose and fibroglandular tissue molecular signatures by using hybrid MRI-guided near-infrared spectral tomography
    Ben Brooksby
    Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
    Proc Natl Acad Sci U S A 103:8828-33. 2006
    ..Combined MR and near-infrared tomography provides fundamental molecular information about these tissue types with resolution governed by MR T1 images...
  10. ncbi request reprint In vivo hemoglobin and water concentrations, oxygen saturation, and scattering estimates from near-infrared breast tomography using spectral reconstruction
    Subhadra Srinivasan
    Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
    Acad Radiol 13:195-202. 2006
    ....
  11. ncbi request reprint Finite element implementation of Maxwell's equations for image reconstruction in electrical impedance tomography
    Nirmal K Soni
    Philips Medical Systems, Cleveland, OH 44143, USA
    IEEE Trans Med Imaging 25:55-61. 2006
    ..The results show that scalar/vector potential reconstruction produces images which are essentially indistinguishable from a Laplace algorithm for frequencies below 1 MHz but superior at frequencies reaching 10 MHz...
  12. ncbi request reprint Near-infrared characterization of breast tumors in vivo using spectrally-constrained reconstruction
    Subhadra Srinivasan
    Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire 03755, USA
    Technol Cancer Res Treat 4:513-26. 2005
    ..These changes represent potential diagnostic indicators, which can be assessed to characterize breast tumors...
  13. ncbi request reprint Excitation patterns in three-dimensional electrical impedance tomography
    Hamid Dehghani
    Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
    Physiol Meas 26:S185-97. 2005
    ..However, in terms of quantitative imaging an excitation pattern where all electrode layers are in phase produces better results...
  14. ncbi request reprint Absorption and scattering imaging of tissue with steady-state second-differential spectral-analysis tomography
    Heng Xu
    Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA
    Opt Lett 29:2043-5. 2004
    ..The steady-state broadband CCD system has the potential to provide accurate chromophore imaging without the technological complexity of time- or frequency-domain systems...
  15. ncbi request reprint Automated region detection based on the contrast-to-noise ratio in near-infrared tomography
    Xiaomei Song
    Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA
    Appl Opt 43:1053-62. 2004
    ..4. A new linear convolution method of CNR calculation was developed for automated region of interest (ROI) detection...
  16. ncbi request reprint A novel data calibration scheme for electrical impedance tomography
    Nirmal K Soni
    Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755 8000, USA
    Physiol Meas 24:421-35. 2003
    ....
  17. ncbi request reprint Three-dimensional optical tomography: resolution in small-object imaging
    Hamid Dehghani
    Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA
    Appl Opt 42:3117-28. 2003
    ..Furthermore, the accuracy of quantitative imaging is increased to almost 100% of the target values when a priori information regarding the internal structure of imaging domain is utilized...
  18. ncbi request reprint Optical tomography of a realistic neonatal head phantom
    Adam Gibson
    Department of Medical Physics and Bioengineering, University College London, 11 20 Capper Street, London WC1E 6JA
    Appl Opt 42:3109-16. 2003
    ..The head-shaped mesh performed slightly better than the spherical mesh, particularly when the absorption of the central region of the phantom was increased...
  19. ncbi request reprint Near-infrared imaging in the small animal brain: optimization of fiber positions
    Heng Xu
    Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire 03755, USA
    J Biomed Opt 8:102-10. 2003
    ..Practical space limitation considerations favor the one-sided fiber array geometry in the case where the NIR acquisition is expected to occur simultaneously with MRI...