Interactive visualization of medical data plays an increasingly vital role in clinical diagnosis. Cluttered views, lack of visual cues, etc. Are some of the problems that exist specially when projecting a 3D rendering of a Computed Tomography data on a 2D screen. In this paper we proposed two synthetic visual cues. They facilitate perception by removing visual clutter while maintaining context, directing viewers' attention to the object of interest, and consequently enhancing clinical diagnosis. Our proposed cues can be used both individually or combined with any other existing cues. Although our methods have been created with medical visualization in mind, it is possible to use them in other volume rendering applications as well.