Doctors from Sion Hospital used CT scans and MRI to create 3D Models of hearts of two infants prior to surgeries. Assisted by these 3D Printed models, Doctors at Fortis Hospital, Mulund, were able to visualize the surgery and finally successfully delivering it to the two infants.
Source: http://timesofindia.indiatimes.com/city/mumbai/In-a-first-Sion-hospital-makes-3D-heart-models-before-surgery/articleshow/47622292.cms