Development of a method for generating a virtual pathological specimen based on deformation of a 3-D gray image

摘要

In this report, we describe a method for generating a virtual stretched image of a luminal organ in a 3-D gray image. In the case of observing large cavity organs, a flattened view of the organ will be very useful for diagnosis. The proposed method generates a virtual stretched image by deforming a 3-D gray image. We generate a polygon model consisting of a set of triangle patches which approximate the global shape of a luminal organ (approximating shape). An original 3-D image is deformed by using the corresponding relation between cut and flattened shape of approximating shape. We can obtain flattened view (virtual pathological specimen) from the deformed image. The proposed method was applied to nine cases of 3D abdominal CT images (stomach and colon). Experimental result showed that the proposed method could generate flattened view of organs satisfactorily.