Ru-102 is a radioactive isotope of the element Ruthenium, which has the atomic number 44. It is produced through nuclear reactions and has a half-life of about 373.59 days. This means that after this period, half of the original amount of Ru-102 will have decayed into other elements. Ru-102 is primarily used in medical applications, particularly in radiotherapy for cancer treatment. Its radioactive properties allow it to target and destroy cancerous cells while minimizing damage to surrounding healthy tissue. Additionally, it can be used in nuclear medicine for diagnostic imaging.