What imaging technique is utilized to diagnose testicular torsion?

Ultrasound of the scrotum is the most effective imaging technique for diagnosing testicular torsion. This non-invasive method allows for real-time assessment of blood flow to the testicle through Doppler imaging, which can reveal reduced or absent blood flow indicative of torsion. The ultrasound can also help identify other potential issues such as the presence of a hydrocele or the testicle's position within the scrotum.

In cases of testicular torsion, prompt diagnosis is crucial because the condition can lead to testicular necrosis if blood supply is not restored quickly. The ultrasound is preferred due to its ability to evaluate the vascular status of the testicle without exposing the patient to radiation, unlike X-rays or CT scans. Additionally, MRI is typically not utilized for this urgent diagnosis as it involves longer scan times and is more expensive, making it impractical in acute settings.