Question

lodine-125 (is a radioisotope used to treat certain tumors and cancers. It undergoes gamma decay with a haffife of 54.90 days, with each decay emitting a gamma ray of energy 5.69 *10J Patients who receive 2il implants may have an initial activity of 337 ICİ (1 pC-3.70 x 10 decaysS) If a 700 kg patient absorbs 100% ofth gamma rays emitted over 600 s, what is the effective dose they wil absorb? The RBE for gamma rays is 1 Effective dose Number USv Given the isotope's halfife, what will the activity be after 361.0 days? Activity after 361.0 days Number uCi Previous Nest Save And Ext Type here to search Fヨ F5 F7 FB FID 2 니 5 6 7 9

Answer 1

the om num 3+x 3.do x o da s 珈如u. snamains constont he t Thal no.de in 6o Se6 1、481 x108 de 따 -才 42.5- x 10 7o 0,0608 μ sv 0.693t TV2. N No e 一5.0113. 0 693 397