Ultrasonography is a test that produces an image through sounds. Sound waves enter into the body and strike the cells, the cells have created echo and thus the image of the specific zone has been stored in the computer screen. The Trans Rectal Scan –Prostate is a specific name of ultrasonography test. The painless and harmless sound strikes the internal organs of prostate and produces the image through echo. This test uses sophisticated tools and technique. Patients shouldn't imagine the threat of this test. The physician would guide you properly and you just need to believe him or her. Trans Rectal Scan – Prostate test is named as TRUS, which scan the prostate gland.