en Radiation Biology Radiation Biology مقاله مروری Review article The present nuclear leakage crisis from Japan is a topic to be discussed in present public health. In radiology, the leaked radioactive elements are considered hazard. Here, the author briefly reviews and discusses on two important radio-hazard elements in post nuclear power plant crisis, radioactive iodine and radioactive cesium. Based on previous similar nuclear crisis in Russia, it is evidenced that the increased incidence of some cancers in post-crisis period is due to exposure to these two important radioactive elements. <span style="font-weight: bold">Iran. J. Radiat. Res., 2011 9(4): 271-273</span> Radioactive, nuclear crisis, iodine, cesium 271 273 http://ijrr.com/browse.php?a_code=A-10-1-413&slc_lang=en&sid=1 V. Wiwanitkit wviroj@yahoo.com 790031947532846002474 790031947532846002474 Yes