Transrectal sonography opens up new dimensions in the diagnosis of prostate pathology and is a powerful tool for early detection and evaluation of prostatic cancer. Both longitudinal and transverse ultrasound imaging of the prostate are possible with different scanning systems. These two scanning methods yield complimentary information about the gland. A new biplane probe combines these two methods on a single probe and gives multiplanar scanning facility.Transrectal sonography system’s facilities include dynamic imaging, accurate puncture guidance, both transperineally and transrectally, and precise distance and volume determinations.