Stanford School of Medicine
Radiation Oncology–

Tokihiro Yamamoto


Ph.D. in Health Science,
Osaka University, Osaka, Japan, 2007

Research

My Ph.D. work involved the development of an integrated Monte Carlo dose calculation system, MCRTV (Monte Carlo for radiotherapy treatment plan verification). MCRTV consists of the EGS4/PRESTA Monte Carlo codes and has been developed for clinical treatment plan verification, especially for routine QA of IMRT at Kyoto University Hospital, Japan. MCRTV is expected as a powerful tool to detect the regions where the conventional dose calculation algorithms fail to predict the accurate dose distributions. At Stanford, I'm now working on image-guided radiotherapy (IGRT) techniques (especially 4D-CT and PET) with Dr. Paul Keall. My current research is to analyze the artifacts of 4D-CT images, which occur mainly due to the respiration irregularities of patients.


Publications

  1. T. Yamamoto, T. Mizowaki, Y. Miyabe, H. Takegawa, Y.Narita, S. Yano, Y. Nagata, T. Teshima, and M. Hiraoka, "An integrated Monte Carlo dosimetric verification system for radiotherapy treatment planning," Phys. Med. Biol. 52(7), 1991-2008 (2007).
  2. M. Shimada, M. Nakamura, Y. Miyabe, T. Yamamoto, T. Teshima, Y. Narita, T. Mizowaki, Y. Nagata, and M. Hiraoka, "Impact of optimization algorithms on the intensity map in IMRT treatment planning," Igaku Butsuri 26(3) 97-107 (2006) (in Japanese).
  3. Y. Nagata, K. Takayama, Y. Matsuo, Y. Norihisa, T, Mizowaki, M. Sakamoto, S. Yano, Y. Narita, T. Yamamoto, and M. Hiraoka, "Stereotactic body radiotherapy (SBRT)," Gan To Kagaku Ryoho 33(4) 455-461 (2006) (in Japanese).
  4. M. Mitsumori, M. Hiraoka, Y. Negoro, C. Yamauchi, N. Shikama, S. Sasaki, T. Yamamoto, T. Teshima, and T. Inoue, "The patterns of care study for breast-conserving therapy in Japan: analysis of process survey from 1995 to 1997," Int. J. Radiat. Oncol. Biol. Phys. 62(4), 1048-1054 (2005).
  5. K. Ogawa, K. Nakamura, T. Sasaki, T. Yamamoto, M. Koizumi, T. Inoue, and T. Teshima, "Radical external beam radiotherapy for prostate cancer in Japan: preliminary results of the changing trends in the patterns of care process survey between 1996-1998 and 1999-2001," Jpn. J. Clin. Oncol. 34(3), 131-136 (2004).
  6. K. Ogawa, K. Nakamura, T. Sasaki, T. Yamamoto, M. Koizumi, T. Teshima, and T. Inoue, "Radical external beam radiotherapy for prostate cancer in Japan: preliminary results of the 1999-2001 patterns of care process survey," Jpn. J. Clin. Oncol. 34(1), 29-36 (2004).
  7. K. Nakamura, K. Ogawa, T. Yamamoto, T. Sasaki, M. Koizumi, T. Teshima, T. Inoue, and The Japanese PCS Working Subgroup of Prostate Cancer, "Trends in the practice of radiotherapy for localized prostate cancer in Japan: a preliminary patterns of care study report, " Jpn. J. Clin. Oncol. 33(10), 527-532 (2003).
  8. N. Shikama, A. Nishikawa, M. Mitsumori, M. Hiraoka, T. Yamamoto, T. Teshima, T. Inoue, F. Wilson, and J. Owen, "Patterns of care study: comparison of process of post-mastectomy radiotherapy (PMRT) in Japan and the USA," Jpn. J. Clin. Oncol. 33(10), 518-521 (2003).
  9. N. Shikama, S. Sasaki, M. Mitsumori, M. Hiraoka, C. Yamauchi, T. Yamamoto, T. Teshima, and T. Inoue, "Patterns of care study in Japan: analysis of patients subjected to mastectomy followed by radiotherapy," Jpn. J. Clin. Oncol. 33(9), 456-462 (2003).
  10. T. Yamamoto, T. Teshima, S. Miyajima, M. Matsumoto, H. Shiomi, Ta. Inoue, To. Inoue, and H. Hirayama, "Monte Carlo calculation of depth doses for small field of CyberKnife," Radiat. Med. 20, 305-310 (2002).

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