1. A method of deriving and displaying an image, the method comprising: deriving a first boundary surface from a volumetric image using a process of layer segmentation; deriving a second boundary surface, different and spaced apart from the first boundary surface, of the volumetric image using the process of layer segmentation, the first and second boundary surfaces defining a slice of the volumetric image therebetween; deriving a third boundary surface between the first and second boundary surfaces, wherein the third boundary surface is axially displaced from the first boundary surface in a first proportion to a local axial distance between the first and second boundary surfaces; deriving a fourth boundary surface between the third and second boundary surfaces, wherein the fourth boundary surface is axially displaced from the second boundary surface in a second proportion to the local axial distance between the first and second boundary surfaces; deriving at least one intermediate thin section between the third and fourth boundary surfaces, the thin section having a thickness that is less than a thickness of the slice of the volumetric image defined by the first and second boundary surfaces and excluding data between the first and third boundary surfaces and data between the fourth and second boundary surfaces; deriving a two dimensional en face surface projection from the data within the intermediate thin section; and displaying the en face surface projection, wherein at least one of the deriving of the first boundary, the deriving of the second boundary and the deriving of the at least one intermediate thin section is performed by at least one processor.