SPECT scan
About this test
A SPECT scan is a type of imaging test that uses a radioactive substance and a special camera to create 3D pictures. This test is also known as single-photon emission computerized tomography. While many imaging tests show what the internal organs look like, a SPECT scan can show how well the organs are working. For instance, a SPECT scan can show how well blood is flowing to the heart; what areas of the brain are more active or less active; or what parts of the bone are affected by cancer.
Why it's done
Some of the most common uses of SPECT are to help diagnose or monitor brain disorders, heart problems and bone disorders.
Risks and complications
For most people, SPECT scans are safe. If you have an injection or infusion of radioactive tracer, you may experience: Bleeding, pain or swelling where the needle was inserted in your arm. Very rarely, an allergic reaction to the radioactive tracer. Be sure to tell your healthcare team or radiation technologist if there's a possibility you're pregnant or if you're breastfeeding.
How to prepare
How you prepare for a SPECT scan depends on your situation. Ask your healthcare team whether you need to make any special preparations before your SPECT scan. In general, you should: Leave metallic jewelry at home. Tell the technologist if you're pregnant or breastfeeding. Bring a list of all the medicines and supplements you take.
Understanding your results
A radiologist or healthcare specialist with advanced training in nuclear medicine will study the results of your SPECT scan and send them to your healthcare team. Pictures from your scan may show colors that tell your team what areas of your body absorbed more of the radioactive tracer and which areas absorbed less. For instance, a brain SPECT image might show a lighter color where brain cells are less active and darker colors where brains cells are more active. Some SPECT images show shades of gray, rather than colors. Ask your healthcare team how long to expect to wait for your results.
Disclaimer: August is a health information platform and its responses don't constitute medical advise. Always consult with a licenced medical professional near you before making any changes.