• Modeling of Light Propagation using the radiative transfer equation or its approximations
• Fast Solution Techniques applied to unstructured discrete-ordinate finite-volume methods
• PDE-constrained Optimization accelerating the image reconstruction process
• Image Compression Techniques combined with optical tomography
• Small Animal Imaging with preclinical studies
• Finger Joints Imaging enabling the early detection of rheumatoid arthritis
• Molecular Imaging with Bioluminescence and Fluorescence

• Aug 2004: Ph.D., Korea Advanced Institute of Science & Technology, Republic of Korea
• Feb 2001: M.Eng., Korea Advanced Institute of Science & Technology, Republic of Korea
• Feb 1999: B.Eng., Seoul National University, Republic of Korea

Professional Experience and Research

• 2009-present: Associate Research Scientist, Biomedical Engineering, Columbia University
• 2006-2009: Postdoctoral Research Scientist, Biomedical Engineering, Columbia University
• 2005-2006: Postdoctoral Research Fellow, Applied Science, University of Quebec at Chicoutimi
• 1992-1994: Military Service, 503rd Battalion, 2nd Infantry Division, United States 8th Army, Republic of Korea

Awards and Scholarships

• 2005-2006: Oversea Postdoctoral Fellow, Korea Research Foundation (KRF), "Frequency Domain Optical Tomography based on the Equation of Radiative Transfer"
• 1999-2004: Full-tuition Academic Scholarship, Korea Advanced Institute of Science & Technology, Republic of Korea
• 1995-1999: Full-tuition Academic Scholarship, Seoul National University, Republic of Korea
• 1994: Army Commendation Medal (ARCOM), The Army of United States, "Extraordinary achievments and meritorious Service with mutual benefit to the United States and Republic of Korea

1. Kim, H.K. et al, are preparing a manuscript concerning "Bioluminescence tomography with a PDE-constrained algorithm based on the equation of radiative transfer" to be submitted to Molecular Imaging.

2. Flexman, M.L., Kim, H.K. , Hernandez, S.L., Huang, J., Johung, T.J., Lee, J.H., Vlachos, F., Yamashiro, D.J., Kandel, J., Hielscher, A.H., are preparing a manuscript concerning “Monitoring early tumor response to anti-angiogenesis drugs”

3. Hielscher, A.H., Kim, H.K., Montejo, L., Blaschke, S., Netz, U., Zwaka, P., Müller, G, Beuthan , J., “Frequency domain optical tomographic imaging of finger joints” , submitted to IEEE Transactions on Medical Imaging (under review)

4. Kim, H.K. and Hielscher, A.H.,“A diffusion-transport hybrid reconstruction method for accelerating optical tomography”, Journal of Innovative Optical Health Sciences, Vol. 3, No. 4, pp 1–13 (2010).

5. Kim, H.K., Flexman, M., Yamashiro, D.J., Kandel, J. and Hielscher, A.H., “PDE-constrained Multispectral Imaging of Tissue Chromophores with the Equation of Radiative Transfer,” Biomedical Optics Express, Vol. 1 Issue 3, pp.812-824 (2010).

6. Kim,  H.K., Lee, J., Hielscher, A.H., “PDE-constrained Fluorescence Tomography with the Frequency-Domain Equation of Radiative Transfer”, IEEE Journal of Selected Topics in Quantum Electronics (Lasers in Medicine and Biology), Issue 99, 10.1109/JSTQE.2009.2038112 (2010).

7. Ko, J. Y., Kim, H.K., Song, T.-H., “Inversion of combustion gas temperature/concentration profile with radiation/turbulence interaction using SRS”, Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 110, pp.1199-1206, 2009.

8. Kim, H.K., Hielscher, A.H., “A PDE-constrained SQP algorithm for optical tomography based on the frequency-domain equation of radiative transfer”, Inverse Problems 25, 015010 (22pp), 2009.

9. Charette, A., Boulanger, J., Kim, H.K., “An overview on recent radiation transport algorithm development for optical tomography imaging”, Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 109, pp. 2743-2898, 2008.

10. Kim, H.K., Netz, U., Beuthan, J., Hielscher, A.H., “Optimal source-modulation frequencies for transport-theory-based optical tomography of small-tissue volumes” Optics Express, Vol. 16,  pp. 18082–18101, 2008.

11. Kim, H.K., André Charette, “Frequency domain optical tomography using a conjugate gradient method without line search”, Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 104, 248-256, 2007.

12. Kim, H.K., André Charette, “A Sensitivity Function-based Conjugate Gradient Method for Optical Tomography based on the Frequency-Domain Equation of Radiative Transfer”, Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 104, 24-39, 2007.

13. Sakurai, A., Song, T.H., Maruyama, S. and Kim, H.K., “Comparison of Radiation Element Method and Discrete Ordinates Interpolation Method Applied to Three-Dimensional Radiative Heat Transfer”, JSME International Journal, Series B, Fluids and Thermal Engineering, Vol. 48(2), pp. 259-264, 2005.

14. Kim, H.K. and Song, T.H., “Determination of the Gas Temperature Profile in a Large-Scale Furnace Using a Fast/Efficient Inversion Scheme for the SRS Technique”, J. Quant. Spectrosc. Radiat. Transfer., Vol. 93, pp. 369-381, 2005.

15. Kim, H.K. and Song, T.H., “Characteristics of SRS inversion for measurement of temperature and CO2 concentration profile of a combustion gas layer”, J. Quant. Spectrosc. Radiat. Transfer., Vol. 86, pp. 181-199, 2004.

16. Kim, H.K. and Song, T.H., "Measurement of gas temperature distributions in a test furnace using spectral remote sensing", J. Quant. Spectrosc. Radiat. Transfer, Vol 73, pp.517-528, 2002.

• Hielscher, A.H., Kim, H.K., Klose, A.D., “Forward Models of Light Transport in Biological Tissue,” in Handbook of Biomedical Optics, D. Boas, C. Pitris, N. Ramanujam, eds. Taylor& Francis Books, Boca Raton, FL.
  

• Applied Optics •  IEEE Transactions on Medical Imaging
• Journal of Biomedical Optics •  Optics Express • Optics Letters
• Inverse Problems • Journal of Quantitative Spectroscopy & Radiative Transfer
• Biomedical Optics Express