definitions - understudies. understudy (n.) 1.someone who takes the place of another (as when things get dangerous or difficult)the star had a stand-in for dangerous scenes we need extra employees for summer fill-ins. 2.an actor able to replace a regular performer when required. understudy (v.)
Radiation can come in the form of a pill. Iodine (131 I) used in thyroid treatment might be given in pill form or as a liquid. The choice is an institutional decision based on many factors, including the amount to be given to a patient.
Radioactive iodine (131-I) is a radioactive isotope that is administered orally, in a liquid or capsule form. The majority of radioactive iodine is taken up by your remaining thyroid cells, since the thyroid normally uses iodine to make thyroid hormone. Very small amounts of iodine may also be taken up transiently by cells in your stomach, salivary glands, and ovaries/testicles.