Investigation of choice to diagnose hyperophic pyloric Stenosis in infants is
Ultrasonography is recommended because its sensitivity and specificity are close to 100% for this disease. Ultrasound is reliable and easily performed and has replaced barium studies as the main investigation.There is a normal variation of pylorus muscle measurements with age and gestation but ultrasound has a very high sensitivity and specificity.
Contrast radiology
Gastroscopy
Ultrasound abdomen
CT scan abdomen
G.I.T