What is the role of radionuclide scans in the diagnosis of testicular torsion?

Updated: Oct 30, 2020
  • Author: Oreoluwa I Ogunyemi, MD; Chief Editor: Edward David Kim, MD, FACS  more...
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If the diagnosis is equivocal, radionuclide scan of the testicles can be helpful to assess blood flow and to differentiate torsion from other conditions. (For images, see Testicular Torsion Imaging.) These studies should preferably be ordered once urologic consultation has been completed and only for equivocal presentations.

Scan results are abnormal in torsion when they demonstrate decreased uptake in the affected testicle, suggesting no blood flow to that side. Radionuclide scans have a sensitivity of 90-100% accuracy in detecting testicular blood flow.

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