The CT scan has replaced conventional cystography as the most sensitive test for bladder perforation. In cases of pelvic fractures, certain CT findings were seen with higher frequency in patients with associated urethral injury than in patients without urethral injury. However, these CT findings do not avoid the need for RUG, which must be performed in all such cases to confirm the diagnosis. MDCT allows scanning with greater speed and narrower collimation compared with single-detector helical CT systems, which translates to larger volumes of coverage with improved spatial resolution and provides very high quality diagnostic images. MDCT allows complete investigation of visceral pelvic lesions and of associated thoracic, abdominal and even brain lesions.