A system and method for presenting three-dimensional image volume data utilizing an orientationally-sensitive display device whereby the image volume is navigable simply by tilting, raising and lowering the display device. Doing so presents an image on the screen that relates to the angle and position of the display device such that the user gets the impression that the device itself is useable as a window into the image volume, especially when the device is placed on or near the source of the image data, such as a patient.