Iridium 192 Is One Radioisotope Used In Brachytherapy In Which A Radioactive Source Is Placed Inside A Patient S Body T 1 (126.72 KiB) Viewed 57 times
Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to treat cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk of damage to healthy tissue. Iridium-192 is often used in the head or breast. Use the radioactive decay curve of iridium-192 to answer the three questions. 100 90 80 70 60- Sample remaining (%) 50 . 40 30 20 - 10- 0 T 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 Time (days) If the initial sample is 2.25 g, what mass of the original iridium-192 remains after 130 days?
If the initial sample is 2.25 g, what mass of the original iridium-192 remains after 130 days? mass remaining: g Estimate the half-life of the radioisotope. half-life: days How many days would it take for one-third of the sample to decay? time: days
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!