Which statement best describes the ultrasound findings associated with acute testicular torsion?

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Acute testicular torsion is diagnosed on ultrasound mainly by a loss of blood flow to the affected testicle on color Doppler. When the spermatic cord twists, arterial inflow is cut off, so you often see absent or severely reduced intratesticular arterial flow. The testis may also appear enlarged and edematous, and the scrotal wall frequently becomes thickened due to edema from the acute process. So, a finding pattern that includes thickened scrotal wall with absent intratesticular flow fits the classic acute torsion picture best, because the hallmark is the vascular compromise inside the testis, accompanied by secondary scrotal changes. Increased perfusion would point toward epididymo-orchitis, not torsion, and normal flow with wall edema is less specific for torsion.