Enlarged Heart More Condition_symptoms, How Can A Baby Be Tested For An Enlarged Heart?

How can a baby be tested for an enlarged heart? - enlarged heart more condition_symptoms,

I have a cousin who lost his 9 months old last night. He had the flu and was followed by vaccination against influenza and got back with the flu. He went to the doctor for an ear infection and was sent home. The next day was scheduled for a scan. During the CT of his death. He said later that he had an enlarged heart. Is there a way the doctors could have proved it before?