Estimation of secondary cancer risk induced by itensity modulated radiotherapy and passive proton beam therapy

S. H. Ahn, J. Kim, M. Cheong, D. Shin, S. Y. Park, S. Lee, M. Yoon, K. H. Shin & K. H. Cho
Background: Protons are used in radiation therapy due to their advantageous physical properties which includes a near-zero exit or distal dose just beyond the target volume, resulting in reduced proton doses to normal tissue. In general, tumors in cancer patients undergoing radiation treatment are exposed[for full text, please go to the a.m. URL]