الفهرس 
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Abstract
Trauma is the leading cause of death in people under 45 years old, the third most common cause of death in patients aged between 45 and 54 years, and the fifth most common cause of death overall.Traumatic retroperitoneal injuries in blunt abdominal trauma are common life-threatening complication of abdomen and pelvis injuries, hence early diagnosis for conservative or urgent radiological interventions and surgical management are necessary as these injuries may not manifest themselves clinically during the initial clinical assessment.
This descriptive cross-sectional study of 27 patients will be carried out to evaluate the role of MDCT in diagnosis of retroperitoneal injuries. Patients with retroperitoneal injuries attending the Diagnostic Radiology Department, Suez Canal University Hospitals in Ismailia will be included into the study.
All patient underwent non enhanced CT scan of the abdomen and pelvis followed by contrast enhanced CT. All patients received a single bolus of non-ionic contrast medium calculated according to the body weight 1 ml/1 kg especially in children. The contrast enhanced scans were obtained in arterial phase by smart prep. Portal venous phase was acquired 70 s after the onset of contrast material injection. Delayed Images were acquired in selected cases according to the radiologist opinion. CT angiography was done for suspected vascular injury. Axial images in all phases were reviewed and analyzed; high quality post-processing two dimensions (2D) coronal and sagittal reformatted images.
The mean age of our study population was (31.7+ 16.3 years) with male predominance (19 (70 %) males and 8 (30 %) were females).