The most impoant use of transrectal ultarsonography (TRUS) is for

A transrectal ultrasound (TRUS) may also be called endorectal ultrasound. It is used to look at the prostate and tissues around it. A TRUS is often used to help diagnose prostate cancer if the prostate-specific antigen (PSA) level is high, or an abnormal area during a digital rectal exam (DRE) . TRUS is done to: look at the size and shape of the prostate look for abnormal areas in the prostate guide a needle during a biopsy to collect samples from the prostate " TRUS technology has become a mainstay of many image guided prostate interventions, including prostate biopsy, brachytherapy, cryotherapy, and high-intensity focused US " Campbell and walsh 11th edition