Figure 8
From: Ultrasonography (US) in the assessment of pediatric non traumatic gastrointestinal emergencies
Ultrasound features of hypertrophic pyloric stenosis. On this view, we evaluate the “double track sign” characterized by double layer of redundant mucosa hiper-echoic separated by several linear tracts of contrast material, that occludes the lumen of the stomach protrudes into the liquid and antral .On this scan the length of pyloric canal and in our experience is >1.3cm mean 1.5cm.