Friday the radiology unit. Ultrasound is a rapid, portable and reliable method for screening of patients with abdominal trauma. Emergency sonography is performed bedside and simultaneously with physical assessment, resuscitation and stabilisation within the first minutes of the patient's arrival. Focused assessment with sonography for trauma (FAST) is now part of the Advanced Trauma Life Support (ATLS) protocol, while becoming the standard of care in the management of adult and children trauma patient for the detection of intraperitoneal, intrathoraic and pericardial fluid. The primary goal of this examination is to determine the need for immediate laparotomy. Recently, FAST has been extended to evaluation of pneumothorax and vascular filling (extended FAST or EFAST). Limitations of FAST include its inability to detect the injuries, and the possibility that the initial bedside ultrasound results negative because fluids are too less to be identified or they have not yet accumulated in the peritoneal pouches. Interpreting the results of imaging studies is more and more challenging and time consuming due to the large volume of data to evaluate, compare and post-process. Radiological errors are inevitable, affect all radiologists and may be defined as a mistake that has management implications for the patient. Errors can be broadly classified into technical errors, active errors (errors in perception, judgment or knowledge) and errors of communication. The majority of errors are false-negative interpretations and occur during interpretation of CT examinations. Good communication between the referring physician and the radiologist is essential. Unfortunately, only a small minority of radiologists keep a personal record of their errors. Patient safety should benefit from the repeat organisation of "error meetings" through the act of collective learning. Radiologists and radiology departments must continue to improve the process of recording and addressing errors. Session Objectives: 1. To understand the potential pitfalls that may be encountered in interpreting imaging exams with emphasis on oncologic and emergency cases. 2. To describe the different types of errors: technical or active errors. 3 . To learn about methods to facilitate identification of errors in order to minimise their occurrence.