 Hello, my name is Dr. Vikram Sinha Kailash Boswami, junior resident in final year. I will be presenting on today, today I will be presenting on the use of fast scan and MDCT in diagnosing solid intraabdominal organ injury in road traffic accident patients. So, abdominal trauma is leading cause of morbidity and mortality among all age groups in road traffic accident cases. Road traffic accidents kill around 150,000 people annually in India. Many of these patients have multi-system injuries resulting from high velocity mechanism. When assessing the status of abdominal trauma patients in emergency department, clinical history, physical examination are often other level and even mistake. Imaging plays critical role in evaluation of patients with suspected abdominal trauma. Portable ultrasonography machine and CT scanners are now available in most trauma centers and with advent of helical scanners, scanning time has been significantly reduced. As a result, focus assessment of sonography for trauma is a fast scan, followed by CT has become an accepted part of chromatology's armamentarium. In suspected abdominal injuries, the solid organs, spleen, kidney, liver are damaged most often, followed by pancreas and intestines. Aims and Objectives To describe the fast scan and CT findings among the patients sustaining abdominal trauma, to analyze sonographic and CT findings and their correlation, to evaluate the efficacy of ESG in diagnosing abdominal trauma with reference to involvement of big blood organs compared to CT scan. Materials and Methods This was a retrospective study done in NJM hospital in Mumbai for a period of six months from 1st June to 31st November, 2022. A total of 20 cases were included that were referred to the department of radio diagnosis by emergency department following RTA with history of abdominal trauma. All patients' fast scan were done followed by CT scan results. On fast scan, 17 hemorrhagic cases were detected and 18 on CT. Spleen injury was detected in 13 cases on fast scan and 14 were detected on CT. Liver injury is detected in 8 cases on fast scan and in 9 cases on CT. Indian injury is detected in 3 cases on fast scan and 5 cases on CT. Ancreas injury was detected in 1 case on fast scan and same case was detected on CT. Boil injury was not detected on fast scan but it was detected in 2 cases were detected on CT. Blood injury was also not detected on fast scan but it was detected on CT. In our study, hemorrhagic retina was found in 17 cases on ESG and 18 on CT. Spleen injury was found in 13 cases on ESG and 14 on CT. So in this case, once plain injury was missed on fast, that was confirmed on CT. Similarly, hemorrhagic injury was found in 8 cases on ESG and 9 on CT. Kidney injuries were found in 3 cases on ESG and 5 on CT. One case of pancreas injury was found in ESG and CT. 2 cases of boil injury and 1 case of blood injury were discovered on CT only. There are 2 cases. First one, 30 year old male admitted in ER following RTA with abdominal trauma. Figure A shows about 2 cm deep, an equigenic band in the middle portion of the spleen on fast scan. Same case of axial CT shows the splenic laceration appearing more extensive on CT, displaying jagged margins and maximum death reaching up to 40 cm. Next case, 45 year old male with history of RTA with abdominal trauma. In the first image, we see ultrasound examination showing large hypothermic area in posterior segment of right lobe of liver and surrounding hemorrhage. The second image of the same case shows large laceration is involving posterior segment of liver on potominal space. High density fluid is also seen around the spleen, moderate hematoma is seen around the liver. So it was confirmed. In recent years, CT and ESG have replaced all the modalities of the investigation up to the great extent. ESG was done in all patients followed by CT examinations. In the study, spenic trauma was the most common injury detected on both ESG and CT. This is the accordance with standard surgical description of more common spenic injuries. And creating boil and misintric injuries and even the trauma were low in frequency. Epitome injuries were also common and were second most common injuries detected after spleen trauma on both ESG and CT. Kidneys were the third most commonly injured organ in this study. There were three cases of criminal injury detected on ultrasonography and five detected on CT. In this study, free fluid was not noted in 17 cases of abdominal trauma on ESG. Out of these 17 cases, associated visceral injuries were presented in 16 cases. One case was not associated with any visceral injuries on ESG. On CT scan, one more additional case of hemoperitoneum was detected, leading to detection of 18 cases of hemoperitoneum on CT in this study. Intestinal obstruction related to immediate post-trauma could have compromised the sonorapid detection of hemoperitoneum in this patient. Two cases were noted, which were having visceral injuries on CT scan, but hemoperitoneum was not detected. Three cases were having multiple solid organ injuries, like spleen with ipsilateral kidney, liver with ipsilateral kidney and so on. One case was not involving liver, kidney, spleen and even bladder organ, which were seen on CT. In conclusion, based on the findings of the study, following conclusion, we are ever arid upon. CT is the imaging molarity of choice for diagnosing abdominal injury. ESG is fairly sensitive in detecting hemoperitoneum and solid organ injuries, especially of higher grades. Spleen is the most commonly injured organ in abdominal trauma. ESG is relatively less sensitive in detecting bowel and bladder injuries. These are the references. Thank you.