A testicular scan can help diagnose conditions that can affect the testicles. This test may be done in an emergency to evaluate the cause of sudden, painful swelling of a testicle, which can be caused by a twisted cord (spermatic cord) inside the testicle. This condition is called torsion and needs to be treated immediately.
You will have a radioactive tracer injected into a vein in your arm. Pictures will be taken immediately following the injection.