A transrectal ultrasound (TRUS) is a diagnostic imaging technique that uses sound waves to create images of the prostate gland and surrounding tissues. Unlike traditional ultrasounds that are applied externally, TRUS involves inserting a probe into the rectum to get closer to the prostate and obtain clearer images. This method is particularly useful for diagnosing conditions like prostate cancer, benign prostatic hyperplasia, and prostatitis.
