Sharif M et al. Serum hyaluronic acid level as a predictor of disease progression in osteoarthritis of the knee. Arthritis Rheum 38:760-767, 1995; Hochberg MC et al. Serum levels of insulin-like growth factor 1 in subjects with osteoarthritis of the knee. Arthritis Rheum 37:1177-1180, 1994
Stable isotopes of an element do not change over time. Atoms of unstable isotopes â also called radioisotopes--change into other elements over time through radioactive decay. Radioisotopes are used in many medical imaging and diagnostic procedures, with the isotope Tc-99m being used in 80 percent of tests.
One of these purposes is the Technetium-99m Generator.Technetium-99m, a man made element and a type of technetium isotope, has been used as a radioisotope since 1958. Since all isotopes of technetium are radioactive so is technetium-99m.The radioisotope is used to diagnose diseased organs. The injection of the technetium-99m isotope gives off a certain type of radiation which show doctors which areas of the organ is diseased without causing radiation damage to the patient.ne of these purposes is the Technetium-99m Generator.Technetium-99m, a man made element and a type of technetium isotope, has been used as a radioisotope since 1958. Since all isotopes of technetium are radioactive so is technetium-99m.