This addition to the core anatomical model introduces the facility for real time TEE image simulation from the 3D virtual heart. The on-screen introduction of a virtual TEE probe generates simulated ultrasound images that are derived directly and continuously from the 3D model.

The TEE probe position is controlled by keyboard and mouse, with the standard flexion, rotation and angulation capabilities of a multiplane probe controlled by screen icons representing the familiar echo probe controls. The 3D model can be set to display the 'cut surface' at the level of the TEE ultrasound plane to further clarify the plane orientation.

Selection of a labelled structure in the 3D model will be accompanied by highlighting of that structure in the simulated TEE image and vice versa, so that the user can easily identify any intracardiac region. As with the core anatomy package, the arrangement of windows displaying the heart, the TEE image and descriptive text may be adjusted by the user. This mode allows students of TEE to visualise clearly the relationship between the 2D TEE image represented on the screen and the underlying 3D anatomy of the heart.