system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Invertogram to be done in a newborn –
assistant
The correct answer is  Invertogram is done to detect imperforate anus.
It is done after six hours of birth in infant as sufficient air may have collected in large intestine to cast a X-ray shadow.