What is the initial diagnostic tool for testicular torsion?

The initial diagnostic tool for testicular torsion is an ultrasound of the scrotum. This imaging technique is preferred because it is non-invasive, does not involve radiation, and can quickly evaluate blood flow to the testicle. In cases of testicular torsion, the blood supply to the affected testicle is compromised, and ultrasound can effectively demonstrate reduced or absent blood flow.

Doppler ultrasound is often used in this context to assess the vascular status of the testis, further confirming the diagnosis. The rapid results of a scrotal ultrasound allow for timely intervention, which is critical in managing testicular torsion to prevent permanent damage to the affected testicle.

Other imaging modalities, like CT scans, are not appropriate first-line tools for diagnosing testicular torsion. They may involve unnecessary exposure to radiation and are generally not as effective in illustrating the problem as ultrasound.