10 Things You Didnât Know About Chronic Fatigue Syndrome. Chronic Fatigue Syndrome (CFS) is undeniably complicated in every conceivable way. The disorder has been around for decades, but the medical community has yet to assemble a clear picture of it. The condition is characterized by extreme fatigue that canât be explained by any underlying medical condition.
A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable.
Radionuclide Cystogram. Definition. A radionuclide cystogram is a special imaging tests called a nuclear scan that involves placing radioactive material into the bladder. A scanner then detects radioactivity to check bladder and urinary tract functions. Bladder scan.