At the core of the HeartWorks product is a freely interactive computer generated model of the human heart which has an unprecedented degree of anatomical detail. It has a photorealistic appearance and has been carefully animated to simulate normal human cardiac motion. The heart rate can be varied and synchronised to an ECG trace. The beating heart is freely controlled by the computer keyboard and mouse; it can be viewed from any angle both internally and externally and through a range of zoom. It can be rotated freely around any axis, and sliced in any plane.

Incorporated into the system is a comprehensive text of cardiac anatomy. Over 160 separate intracardiac structures have been labelled, with accompanying detailed anatomical text. Any selected structure can be simultaneously highlighted in the text and displayed within the 3D model. A number of predefined areas of the heart can be displayed separately or in combination, facilitating understanding of anatomical relationships. The arrangement of the display windows on the screen can be adjusted by the operator to suit personal preference.