Stanford School of Medicine
Radiation Oncology–

Amit Sawant


Ph.D. in Biomedical Engineering,
University of Michigan, Ann Arbor, 2006

Research

My doctoral research involved the development of novel portal imagers incorporating very high quantum efficiency detectors. Such imagers are capable of yielding high quality projection images at extremely low dose (~1 linac pulse per image) and, therefore, have the potential to achieve soft-tissue contrast visualization using megavoltage CT at clinically acceptable doses. At Stanford, I am working with Dr. Paul Keall on image-guided radiotherapy techniques including MLC-based tracking to account for respiratory motion during treatment.


Publications

  1. A. Sawant, L. E. Antonuk and Y. El-Mohri, "Slit design for efficient and accurate MTF measurement at megavoltage x-ray energies" Med. Phys., 34, pp. 1535-1545, (2007).
  2. Y. El-Mohri, L. E. Antonuk, Q. Zhao , Y. Wang , Y. Li , H. Du and A. Sawant, "Performance of a high fill factor, indirect detection prototype flat-panel imager for mammography" Med. Phys., 34, pp. 315-327, (2007).
  3. A. Sawant, L. E. Antonuk, Y. El-Mohri, et al., "Segmented crystalline scintillators: Empirical and theoretical investigation of a high quantum efficiency EPID based on an initial engineering prototype CsI(Tl) detector" Med. Phys., 33, pp. 1053-1066, (2006).
  4. Y. Li, L. E. Antonuk, Y. El-Mohri, Q. Zhao, H. Du, A. Sawant, and Y. Wang., “Effects of x-ray irradiation on polycrystalline silicon, thin-film transistors” 99, pp. 064501-1 - 064501-7, (2006).
  5. A. Sawant, L. E. Antonuk, Y. El-Mohri, et al., "Segmented crystalline scintillators: An initial investigation of high quantum efficiency detectors for megavoltage x-ray imaging ," Med. Phys., 32, pp. 3067-3083, (2005).
  6. A. Sawant, L. E. Antonuk, Y. El-Mohri, et al., "Segmented phosphors: MEMS-based high quantum efficiency detectors for megavoltage x-ray imaging" Med. Phys., 32, pp. 553-565, (2005).
  7. Z. Su, L. E. Antonuk, Y. El-Mohri, L. Hu, H. Du, A. Sawant, Y. Li, Y. Wang, J. Yamamoto, and Q. Zhao, "Systematic investigation of the signal properties of polycrystalline HgI2 detectors under mammographic, radiographic, fluoroscopic and radiotherapy irradiation conditions" Phys Med Biol, 50, pp. 2907-2928, (2005).
  8. Y. X. Kang, L. E. Antonuk, Y. El-Mohri, L. Hu, Y. X. Li, A. Sawant, Z. Su, Y. Wang, J. Yamamoto, and Q. H. Zhao, "Examination of PbI2 and HgI2 photoconductive materials for direct detection, active matrix, flat-panel imagers for diagnostic X-ray imaging" IEEE Trans, Nucl. Sci., 52, pp. 38-45, (2005).
  9. A. Sawant, H. Zeman, S. Samant, et. al., "Theoretical analysis and experimental evaluation of a CsI(Tl) based electronic portal imaging system" Med. Phys, 29, pp. 1042-1053, (2002).

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