By Joy Johnson, CNMT
Nuclear Medicine - Lead Technologist, Blanchard Valley Health System
Nuclear medicine testing is a branch of medical imaging that uses small amounts of radioactive materials, called radiopharmaceuticals, to provide information about the physiological function of tissues and organs, such as blood flow, metabolism, and biochemical processes. This can be particularly useful in diagnosing certain diseases, monitoring treatment responses, and assessing disease progression. Other imaging modalities like X-rays, CT scans, and MRI primarily provide structural images of the body.
Radiopharmaceuticals are drugs containing radioactive isotopes. These isotopes emit gamma rays that are detected by specialized cameras. In contrast, other imaging modalities use external sources of energy (X-rays, magnetic fields, etc.) to create images. The amount of radiation used in nuclear medicine tests is considered safe for patients. However, pregnant or breastfeeding women are typically advised to avoid these tests unless absolutely necessary. ▶︎
