This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiology Q Bank, Subject name: Radiology
A 25 year old young male with abdominal pain after sustaining blunt trauma to his abdomen during a road traffic accident has brought to emergency depament. His BP is 120/80 and pulse rate is 72bpm. The next best step in management of this patient is? 
Select and explain. 
A. Diagnostic Peritoneal Tap, B. Ultrasound, C. NCCT-Abdomen, D. CECT
B: Ultrasound
Answer: B: Ultrasound 
Explanation: * Initial Investigation in a patient with abdominal trauma is USG to detect hemoperitoneum * Investigation of choice to know the source of hemoperitoneum in a stable patient is CECT-Abdomen. Radiological evaluation of abdominal trauma in emergency: Order of FAST Views : 1.Subxiphoid View to detect pericardial collections 2.Right Flank View 3.Left Flank View 4.Pelvic View Figure showing normal right upper quandrant on USG. Figure showing 'Right upper quadrant (RUQ) FAST POSITIVE'.