When children suffer a blunt torso trauma (an injury to the body without any cuts), it can cause dangerous bleeding inside the tummy (abdomen). To check for these injuries, doctors often use a special scan called a CT scan. A CT scan uses X-rays to take detailed pictures inside the body but exposes kids to some radiation, which isn't always safe. This study looks at using a different test called FAST (Focused Assessment with Sonography for Trauma), which is a quick ultrasound exam done at the hospital bedside. Ultrasounds use sound waves, not radiation, to check for injuries, making them safer. This research involves 3,194 children and checks if using FAST helps doctors decide when a CT scan is really necessary.

• Study follows children under 18 with blunt abdominal trauma.
• Patients must visit the hospital within 24 hours of injury.
• Includes six centers for broader results.

This study aims to find better ways to help children with these injuries while reducing unnecessary radiation exposure and improving overall care. If successful, it could make a significant difference in treating young patients.