Two patients Krishna, aged 19, ( diagnosed with a complex congenital heart disease as an infant) and Izam, aged 15, (diagnosed with Congenitally Corrected Transposition of the Great Arteries (ccTGA) underwent a full cardiac evaluation at Amrita Institute of Medical Sciences (AIMS) at Kochi, under the close supervision of Dr. Mahesh Kappanayil, Paediatric Cardiologist, and Dr. Rajesh Kannan, Radiologist.  After some consideration, the Paediatric Cardiac team decided that the use or 3D printing technology could assist both the cases. With the help of Materialise (a provider of Additive Manufacturing software solutions and sophisticated 3D printing services in a wide variety of industries, including healthcare, automotive, aerospace, art and design and consumer products), the medical team proceeded to create a physical model of life two patients' hearts, in order to make their pre-operative planning more informed and precise. Surgeons at AIMS operated successfully on both Krishna and Izam in August 2015, after examining the 3D printed heart models in great detail prior to each operation.