With minimal training, ED providers have a Sn of 0.85 and Sp 0.97
Classically a child from 3-36 mos with colicy pain, palpable mass on the right, and current jelly stool

Use linear probe
Scan from the cecum in the RLQ towards the RUQ
Scanning over a palpable mass if felt can be helpful
Identified the characteristic findings
Scanning over a palpable mass if felt can be helpful
Longitudinal view shows a dilated intussuscipiens containing the intussusceptum
This forms three parallel hypoechoic layers separated by hyperechoic zones
Pseudokidney sign can be seen if mesentery is only on one side of the bowel
Short axis shows a target sign of three parallel hypoechoic areas separated by hyperechoic zones
This forms three parallel hypoechoic layers separated by hyperechoic zones
Ultrasound: Abdomen
Ultrasound: Pelvic
Ultrasound: Probe orientation
Ultrasound: Lungs
Ultrasound: Pharyngeal
Ultrasound: Signs
Acute abdominal series
Ultrasound: Tendons